The Apostle Paul said at the end of his life that he had fought the good fight, he had finished his course (2 Timothy 4:7). Not all Christians make it to the end of their course. Jesus said in his explanation of the Parable of the Sower that when tribulation or persecution comes into a person’s life, some fall away (Matthew 13:21). The Israelites were notorious for wanting to turn back after they had been delivered from slavery in Egypt. Shortly before they crossed the Red Sea, it says in Exodus 14:10-12, “When Pharaoh drew near the people of Israel lifted up their eyes, and behold the Egyptians were marching after them, and they feared greatly. And the people of Israel cried out to the LORD. They said to Moses, ‘Is it because there are no graves in Egypt that you have taken us away to die in the wilderness? What have you done to us in bringing us out of Egypt? Is not this what we said to you in Egypt: “Leave us alone that we may serve the Egyptians”? For it would have been better for us to serve the Egyptians than to die in the wilderness.’” When they reached the Promised Land, the people rebelled again. It says in Numbers 14:1-4:

Then all the congregation raised a loud cry, and the people wept that night. And all the people of Israel grumbled against Moses and Aaron. The whole congregation said to them, “Would that we had died in the land of Egypt! Or would that we had died in this wilderness! Why is the Lord bringing us into this land, to fall by the sword? Our wives and our little ones will become a prey. Would it not be better for us to go back to Egypt?” And they said to one another, “Let us choose a leader and go back to Egypt.”

God responded to the Israelites lack of faith by making them wander in the wilderness for forty years. The LORD said the people had rejected the land that he wanted to give them and would therefore be punished for their sin (Numbers 14:32, 34). God said, “And your children shall be shepherds in the wilderness forty years and shall suffer for your faithlessness, until the last of your dead bodies lies in the wilderness” (Numbers 14:33). Later, the Israelites were sent into captivity for seventy years because they were not willing to repent and turn to God for forgiveness (Jeremiah 25:1-14).

Hebrews 6:4-6 focuses on the problem of turning back after a person has made a profession of faith. It states:

For it is impossible, in the case of those who have once been enlightened, who have tasted the heavenly gift, and have shared in the Holy Spirit, and have tasted the goodness of the word of God and the powers of the age to come, and then have fallen away, to restore them again to repentance, since they are crucifying once again the Son of God to their own harm and holding him up to contempt.

“This much-debated passage likely discusses unbelievers who have ‘fallen away’ (v. 6) by consciously rejecting the spiritual enlightenment they have received (v. 4). They had experienced a taste of God’s goodness (v. 5) and may even have been part of the assembly. They had given intellectual assent to the truth of Christianity, but their apostasy demonstrated that their professed faith was not genuine. In turning away from the sacrifice of Christ, perhaps to return to the Judaism they previously espoused, they rejected the only means of salvation that God has provided. Their deliberate apostasy was so severe that they could not be ‘restored’ (anakainizein [344]) to repentance. Judas Iscariot is an example of one who, although outwardly associated with the things of the Lord, ultimately chose to turn away” (note on Hebrews 6:4-6).

Restoring someone to faith after they have turned back is impossible because unbelief is a conscious decision to reject the truth of God’s word. The person understands the gospel and knows that it is true, but doesn’t want to repent and seek God’s forgiveness. The person’s decision is made evident by their behavior such as when Judas Iscariot betrayed Jesus for thirty pieces of silver (Matthew 26:14-16). Hebrews 6:7-8 explains, “For land that has drunk the rain that often falls on it, and produces a crop useful to those for whose sake it is cultivated, receives a blessing from God. But if it bears thorns and thistles, it is worthless and near to being cursed, and its end is to be burned.”

The Apostle James warned believers against hearing the word of God and not doing what it tells us to. James said, “But be doers if the word and not hearers only, deceiving yourselves. For is anyone is a hearer of the word and not a doer, he is like a man who looks intently at his natural face in a mirror. For he looks at himself and goes away and at once forgets what he was like. But the one who looks into the perfect law, the law of liberty, and perseveres being no hearer who forgets but a doer who acts, he will be blessed in his doing” (James 1:22-25). Perseverance is the ability to stay near to God even when he is disciplining us or testing our faith. Jesus said that we must abide in him if we want to be able to produce fruit and receive God’s blessing. He stated, “Abide in me, and I in you. As the branch cannot bear fruit by itself unless it abides in the vine, neither can you, unless you abide in me. I am the vine, you are the branches. Whoever abides in me, and I in him, he it is that bears much fruit, for apart from me you can do nothing. If anyone does not abide in me he is thrown away like a branch and withers; and the branches are gathered, thrown into the fire, and burned. If you abide in me, and my words abide in you, ask whatever you wish, and it will be done for you. By this is my Father glorified, that you bear much fruit and so prove to be my disciples” (John 15:4-8).