After he identified the works of the flesh (Galatians 5:19-21) and the fruit of the Spirit (Galatians 5:22-23), Paul went on to say that all Christians are personally responsible for the outcome of their spiritual lives (Galatians 6:4-5). Paul stated, “Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap” (Galatians 6:7). Paul intended that the principle of sowing and reaping would link spiritual activity with the indwelling of the Holy Spirit. When he said, “the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, meekness, temperance,” Paul meant that these characteristics would be produced by the Holy Spirit and become more and more visible over time in a Christian’s behavior if he or she remained in fellowship with God.
An important aspect of the principle of sowing and reaping was the idea that a particular type of seed produced a specific kind of fruit (e.g. you can’t grow an apple tree from an orange seed). Whatever kind of seed you started with was the only thing you were able to produce. Jesus’ parable of the sower (Matthew 13:3-8) indicated that the seed that needed to be sown in order to reap the fruit of the Spirit was the word of God. In his explanation of this parable, Jesus said:
“When anyone hears the word of the kingdom and does not understand it, the evil one comes and snatches away what has been sown in his heart. This is what was sown along the path. As for what was sown on rocky ground, this is the one who hears the word and immediately receives it with joy, yet he has no root in himself, but endures for a while, and when tribulation or persecution arises on account of the word, immediately he falls away. As for what was sown among thorns, this is the one who hears the word, but the cares of this world and the deceitfulness of riches choke the word, and it proves unfruitful. As for what was sown on good soil, this is the one who hears the word and understands it. He indeed bears fruit and yields, in one case a hundredfold, in another sixty, and in another thirty.” (Matthew 13:19-23, ESV)
The Greek word translated understands in Matthew 13:23, suniemi (soon-ee’-ay-mee) is derived from the word sun (soon) which denotes union; “with or together, i.e. by association, companionship, process, resemblance, possession, instrumentality, addition, etc.” (G4862). Another way of describing the Greek word sun would be assimilation, the process of taking in and fully understanding information or ideas. Assimilation also refers to the absorption and digestion of food or nutrients by the body or any biological system (Oxford Dictionary).
The process of assimilating the word of God can take years, sometimes decades, or even an entire lifetime. What is important to note is that it is an intentional process, one that does not happen automatically. Otherwise, there would be no such thing as a carnal Christian, a person that is saved, but does not produce any spiritual fruit (1 Corinthians 3:3). Paul encouraged believers to stick with the process of spiritual growth, even if it seemed like nothing was happening. He said, “And let us not be weary in well doing: for in due season we shall reap, if we faint not” (Galatians 6:9). In other words, your appointed time to be blessed by God may come when you least expect it, when you are past the point of giving up.