The conquest of the land of Canaan under the leadership of Joshua began with God instructing Joshua to take the people to the other side of the Jordan River (Joshua 1:2). God told Joshua, “No man shall be able to stand before you all the days of your life. Just as I was with Moses, so I will be with you. I will not leave you or forsake you. Be strong and courageous, for you shall cause this people to inherit the land that I swore to their fathers to give them” (Joshua 1:5-6). It appears that God commanded Joshua to “be strong and courageous” because his spiritual success was linked to these two characteristics and they were not a natural part of Joshua’s personality. The Hebrew word that is translated strong, chazaq (khaw-zakˊ) means “to fasten upon” or “take hold of.” Chazaq appears in the book of Exodus in connection with Pharaoh’s refusal to let the people of Israel go so that they could worship God. “In reference to Pharaoh, it means to brace up and strengthen and points to the hardihood with which he set himself to act in defiance against God and closed all avenues to his heart to those signs and wonders which Moses wrought. Pharaoh was responsible for his hard heart. Four times we read: ‘Pharaoh’s heart was hardened’ (Exodus 7:13, 22; 8:19; 9:35)” (H2388). God’s command to be strong likely meant that he wanted Joshua to be strong in the sense of having the necessary hardihood to set himself against the people of Canaan. The Israelites were instructed to “save alive nothing that breathes” and to “devote them to complete destruction” (Deuteronomy 20:16-17). The Hebrew word that is translated courageous in Joshua 1:6, ʾamats (aw-matsˊ) has to do with being mentally alert (H553). Both chazaq and ʾamats are connected with being obstinate, a personality trait that is associated with stubbornly refusing to change one’s opinion or chosen course of action despite attempts to persuade one to do so. God reemphasized the importance of strength and courage to spiritual success when he said to Joshua, “Only be strong and very courageous, being careful to do according to all the law that Moses my servant commanded you. Do not turn from it to the right hand or to the left, that you may have good success wherever you go” (Joshua 1:7).

God told Joshua that he would have good success if he did everything according to the Law of Moses. The Hebrew word that is translated good success, sakal (saw-kalʾ) means “to be (causative make or act) circumspect and hence, intelligent…It’s first use in the text, in Genesis 3:6, contributes to an interesting paradox, for while the forbidden fruit was ‘to be desired to make one wise,’ it was a very unwise thing to take it! The basic meaning of sakal seems to be ‘to look at, to give attention to,’ as illustrated in this parallelism: ‘That they may see, and know, and consider, and understand…’ (Isaiah 41:20). From this develops the connotation of insight, intellectual comprehension” (H7919). God reiterated his prescription for good success when he told Joshua, “This Book of the Law shall not depart from your mouth, but you shall meditate on it day and night, so that you may be careful to do according to all that is written in it. For then you will make your way prosperous, and then you will have good success” (Joshua 1:8). God said that Joshua should be careful to do according to all that was written in the Book of the Law because it would make his way prosperous. The Hebrew word that is translated way, derek (dehˊ-rek) is used figuratively throughout the Old Testament of the Bible to refer to “a course of life or mode of action…In one passage derek signifies the overall course and fixed path of one’s life or his ‘destiny’” (H1870). When God said that Joshua’s way would be prosperous, he meant that Joshua would have spiritual success; that Joshua would thrive spiritually (H6743).

Psalm 1 echoes God’s message to Joshua and depicts spiritual success as a tree that yields its fruit at the appropriate or appointed time (H6256). It states:

Blessed is the man
    who walks not in the counsel of the wicked,
nor stands in the way of sinners,
    nor sits in the seat of scoffers;
but his delight is in the law of the Lord,
    and on his law he meditates day and night.

He is like a tree
    planted by streams of water
that yields its fruit in its season,
    and its leaf does not wither.
In all that he does, he prospers.
The wicked are not so,
    but are like chaff that the wind drives away.

Therefore the wicked will not stand in the judgment,
    nor sinners in the congregation of the righteous;
for the Lord knows the way of the righteous,
    but the way of the wicked will perish. (Psalm 1:1-6)

The author of Psalm 1 reinforced the message that the person who wants to experience spiritual success should meditate on the law of the LORD day and night. Biblical meditation typically involves a verbalization of scripture or rather one’s emotional reaction to its message. The Hebrew word hagah (haw-gawˊ) means “to meditate, moan, growl, utter, speak” and conveys “the idea that mental exercise, planning, often is accompanied by low talking” (H1897).

Bearing fruit was a common theme in Jesus’ teaching throughout his ministry. Jesus’ parables made it clear that bearing fruit was not the norm, but that it usually required some type of special circumstance or an intervention for it to happen. In one of his conversations with his followers, Jesus connected repentance with a fig tree’s ability to bear fruit. Luke 13:1-9 states:

There were some present at that very time who told him about the Galileans whose blood Pilate had mingled with their sacrifices. And he answered them, “Do you think that these Galileans were worse sinners than all the other Galileans, because they suffered in this way? No, I tell you; but unless you repent, you will all likewise perish. Or those eighteen on whom the tower in Siloam fell and killed them: do you think that they were worse offenders than all the others who lived in Jerusalem? No, I tell you; but unless you repent, you will all likewise perish.” And he told this parable: “A man had a fig tree planted in his vineyard, and he came seeking fruit on it and found none. And he said to the vinedresser, ‘Look, for three years now I have come seeking fruit on this fig tree, and I find none. Cut it down. Why should it use up the ground?’ And he answered him, ‘Sir, let it alone this year also, until I dig around it and put on manure. Then if it should bear fruit next year, well and good; but if not, you can cut it down.’”

The Greek word that is translated repent in Luke 13:3, metanoeo (met-an-o-ehˊ-o) means “to think differently or afterwards, i.e. reconsider…to change one’s mind or purpose” (G3340). The LORD identified the change that needed to take place in Joshua’s mind when he said, “Have I not commanded you? Be strong and courageous. Do not be frightened, and do not be dismayed, for the LORD your God is with you wherever you go” (Joshua 1:9). Joshua may have been dreading the moment when he was going to have lead the Israelites across the Jordan River and begin conquering the people living in the land of Canaan. The Hebrew word that is translated dismayed, chathath (khaw-thathˊ) means “to be dismayed, shattered, broken, terrified” (H2865). Joshua acted according to God’s command in spite of his natural inclination to tremble in fear and be in dread of what was going to happen (Joshua 1:10-11), but in what may have been a moment of weakness, Joshua “sent two men secretly from Shittim as spies, saying, ‘Go, view the land, especially Jericho’” (Joshua 2:1). Joshua 2:1-11 tells us what happened when the two spies encountered a woman referred to as “Rahab the prostitute” (Joshua 6-17). It states:

And they went and came into the house of a prostitute whose name was Rahab and lodged there. And it was told to the king of Jericho, “Behold, men of Israel have come here tonight to search out the land.” Then the king of Jericho sent to Rahab, saying, “Bring out the men who have come to you, who entered your house, for they have come to search out all the land.” But the woman had taken the two men and hidden them. And she said, “True, the men came to me, but I did not know where they were from. And when the gate was about to be closed at dark, the men went out. I do not know where the men went. Pursue them quickly, for you will overtake them.” But she had brought them up to the roof and hid them with the stalks of flax that she had laid in order on the roof. So the men pursued after them on the way to the Jordan as far as the fords. And the gate was shut as soon as the pursuers had gone out. Before the men lay down, she came up to them on the roof and said to the men, “I know that the Lord has given you the land, and that the fear of you has fallen upon us, and that all the inhabitants of the land melt away before you. For we have heard how the Lord dried up the water of the Red Sea before you when you came out of Egypt, and what you did to the two kings of the Amorites who were beyond the Jordan, to Sihon and Og, whom you devoted to destruction. And as soon as we heard it, our hearts melted, and there was no spirit left in any man because of you, for the Lord your God, he is God in the heavens above and on the earth beneath.

Rahab’s declaration that the LORD, “he is God in the heavens above and on the earth beneath” was a profession of faith that bolstered the spies confidence and her testimony was shared with Joshua who was then able to lead the people across the Jordan River (Joshua 3:1). In exchange for her help, Rahab was told, “Our life for yours even to death! If you do not tell this business of ours, then when the LORD gives us the land we will deal kindly and faithfully with you” (Joshua 2:14).

The two words the spies used to describe their future relationship with Rahab, deal kindly and faithfully with her, were associated with the covenant God made with Abraham. Checed (khehˊ-sed) which means kindness “refers primarily to mutual and reciprocal rights and obligations between the parties of a relationship (especially Yahweh and Israel). But cheçed is not only a matter of obligation; it is also of generosity. It is not only a matter of loyalty, but also of mercy. The weaker party seeks the protection and blessing of the patron and protector, but he may not lay absolute claim to it. The stronger party remains committed to his promise, but retains his freedom, especially with regard to the manner in which he will implement those promises. Checed implies personal involvement and commitment in a relationship beyond the rule of law…Behind all these uses with man as the subject, however, stand the repeated references to God’s cheçed. It is one of His most central characteristics. God’s loving-kindness is offered to His people, who need redemption from sin, enemies, and troubles” (H2617). The Hebrew word that is translated faithfully in Joshua 2:14, ʾemeth (ehˊ-meth) is derived from the word ʾaman (aw-manˊ). “Aman means ‘to be firm, endure, be faithful, be true, stand fast, trust, have belief, believe…Considering something to be trustworthy is an act of full trusting or believing. This is the emphasis in the first biblical occurrence of aman: ‘And [Abram] believed in the LORD; and he counted it to him for righteousness” (Genesis 15:6). The meaning here is that Abram was full of trust and confidence in God, and that he did not fear Him (v. 1). It was not primarily in God’s words that he believed, but in God Himself. Nor does the text tell us that Abram believed God so as to accept what he said as ‘true’ and ‘trustworthy’ (cf. Genesis 45:26), but simply that he believed in God. In other words, Abram came to experience a personal relationship with God rather than an impersonal relationship with his promises” (H539).

We know that Rahab believed in God because she is commended for her faith in Hebrews 11:31, which states, “By faith Rahab the prostitute did not perish with those who were disobedient, because she had given a friendly welcome to the spies.” The Greek word that is translated disobedient, apeitheo (ap-i-thehˊ-o) means “to disbelieve (willfully and perversely)” (G544). Rahab distinguished herself from the rest of the people of Canaan because she cooperated with God’s plan and did her part to make sure that is was carried out. Being mentioned by name in Hebrews 11 meant that Rahab the prostitute was a significant contributor to the spiritual success of God’s plan of salvation. Rahab was also mentioned in James’ message about faith without works and was set alongside Abraham as an example of being justified by individual acts of faith. James said:

What good is it, my brothers, if someone says he has faith but does not have works? Can that faith save him? If a brother or sister is poorly clothed and lacking in daily food, and one of you says to them, “Go in peace, be warmed and filled,” without giving them the things needed for the body, what good is that? So also faith by itself, if it does not have works, is dead. But someone will say, “You have faith and I have works.” Show me your faith apart from your works, and I will show you my faith by my works. You believe that God is one; you do well. Even the demons believe—and shudder! Do you want to be shown, you foolish person, that faith apart from works is useless? Was not Abraham our father justified by works when he offered up his son Isaac on the altar? You see that faith was active along with his works, and faith was completed by his works; and the Scripture was fulfilled that says, “Abraham believed God, and it was counted to him as righteousness”—and he was called a friend of God. You see that a person is justified by works and not by faith alone. And in the same way was not also Rahab the prostitute justified by works when she received the messengers and sent them out by another way? For as the body apart from the spirit is dead, so also faith apart from works is dead. (James 2:14-26)

Rahab was likely identified as a prostitute to show that her moral depravity prior to her encounter with the Jewish spies made her an unlikely candidate to risk her life in order to help them escape. “The Hebrew term zonah (H2181) is the common word for an ‘adulterer’ or ‘prostitute’ (Leviticus 21:7; Jeremiah 5:7). The New Testament affirms that such a woman can be pardoned (Luke 7:37). Rahab was not only pardoned but raised to a position of honor. She married into an Israelite family and was an ancestor of David, thus placing her in the line of Jesus, the Messiah (Matthew 1:5)” (Note on Joshua 2:1).

“It was not unusual for strangers and foreigners to go to Rahab’s house, and thus the spies would not appear suspicious there. Others who passed through the prostitute’s house would provide the spies with information on the situation in Jericho. God did not bless Rahab for lying but for her faith in the report that the spies gave” (note on Joshua 2:1). Joshua 2:23-24 tells us, “Then the two men returned. They came down from the hills and passed over and came to Joshua the son of Nun, and they told him all that had happened to them. And they said to Joshua, ‘Truly the LORD has given all the land into our hands. And also all the inhabitants of the land melt away because of us.” The two spies’ report to Joshua affirmed their belief in what Rahab had told them even though she was a prostitute and had no credibility as a woman. The reason why Rahab’s words had such a big impact on the two men who came to her for help was because she demonstrated the characteristics that the Israelites needed for spiritual success, strength and courage, when she hid the spies and lied to protect them from the king of Jericho (Joshua 2:2-3).

Proverbs 18:21 states, “Death and life are in the power of the tongue, and those who love it will eat its fruit.” The impact of Rahab’s words is evident in the way the two spies reacted to the things she said. Jesus’ spent most of his ministry telling people things that were intended to change their lives. The power of the tongue is a way of describing the influence that a person has over another person when he says something that impacts him so much that it changes his life. The reason why the power of the tongue can lead to death or life is because hearing and believing God’s word is the only way we can be revived from spiritual death, but if we harden our hearts and rebel against God’s word we will not (Hebrews 3:16-19). The Apostle Paul explained this point in his letter to the Romans. Paul began by asking the question, “How then will they call on him in whom they have not believed? And how are they to believe in him of whom they have never heard? And how are they to hear without someone preaching? And how are they to preach unless they are sent? As it is written, “How beautiful are the feet of those who preach the good news!” But they have not all obeyed the gospel. For Isaiah says, “Lord, who has believed what he has heard from us?” So faith comes from hearing, and hearing through the word of Christ” (Romans 10:14-17).