In “two harvests” Jefferson Vann compares the two permanent destinies: life or destruction.
Galatians 6:6-10 (JDV)
Galatians 6:6 Let the one who is instructed in the word share all his good things with the instructor.
Galatians 6:7 Don’t be deceived: God is not mocked. For whatever a human plants he will also harvest,
Galatians 6:8 because the one who plants to his flesh will harvest destruction from the flesh, but the one who plants to the Breath will harvest permanent  life from the Breath.
Galatians 6:9 Let us not get tired of doing good, because we will harvest at the appropriate season if we don’t give up.
Galatians 6:10 Therefore, since we have a season, let us work for the good of all, especially for those who belong to the household of faith.
The Sacred Breath who comes into us at our conversion is a deposit, guaranteeing the permanent life which we will harvest at the appropriate season. When is that appropriate season? It is resurrection day – the last day, when Jesus returns.
The heretical cult trying to change the Galatians had taught them that good works were essential to individual salvation. Paul and his team urged the Galatians to stop thinking of good works that way. Instead, good works are a means of showing appreciation toward those who have shared the gospel with you. Also, they are a planting of like kind. The Sacred Breath brings us spiritual life. Operating our lives in such a way as to produce the fruit of the Breath (working for the good of all) is an investment in the same future.
The alternative (even if you are in the visible church) is planting to your flesh. The end result of that kind of planting is destruction. So Paul and his team encouraged the Galatians to plant the right thing, so that their harvest would be life, not destruction and death.
Lord, give us the wisdom to plant for a harvest of life.
For more on the two permanent destinies, see: