"Do not be deceived, God is not mocked; for whatever a man sows, this he will also reap. For the one who sows to his own flesh will from the flesh reap corruption, but the one who sows to the Spirit will from the Spirit reap eternal life." Galatians 6:7-8
A farmer understands this principle and depends upon it to always be true. He plants seed in faithful anticipation that the seed will sprout and grow into a needed crop. If a farmer plants a row of peas in one place and corn in another, he fully expects that each seed will reproduce after itís own kind. If he sows corn he will reap corn. The golden rule is based on this truth, -Do unto others as you would have them do unto you.
In our text the Apostle is exhorting the Church to not be deceived into believing that you can sow one thing and reap another. In fact, as we see here that if that were possible it would actually mock God. How would it mock God? God has declared and has had it recorded on earth and in heaven that each person will be judged according to his deeds.
If a person lives his life practicing sin then he will reap the penalty of death in the Lake of Fire. If a person gives his life to God, turns from practicing sin, then he will be rewarded and inherit eternal life. These have sown in the Spirit.
According to the Bible, the Church is being judged right now, but there is a coming Judgment for everyone. "Then I saw a Great White Throne and Him who sat upon it, from whose presence earth and heaven fled away, and no place was found for them. And I saw the dead, the great and the small, standing before the Throne and Books (books of the Bible) were opened; and another book was opened, which is the Book of Life; and the dead were judged from the things which were written in the books, according to their deeds." Rev.20
Paul is urging the brethren to sow Spiritual things in order that they will have a Spiritual harvest which is eternal. Jesus taught that we should not store up our treasures on earth where they will fade away, but store them in heaven where they are eternal. There is one thing that every person needs - forgiveness from sin. When Jesus taught His disciples to pray He said to do it this way, -"Lord, forgive us of our trespasses as we forgive those who trespass against us." Jesus went on to say that those who do not forgive others will not be forgiven themselves. We cannot sow unforgiveness to others and reap forgiveness from God.