Note: People sometimes use the more formal expressions as you sow, so shall you reap or as we sow, so shall we reap. And he exhorted Timothy to flee the things of the world and fight the fight of faith and lay hold on eternal life.
The principle of reaping and sowing is generally true, but not always at work in every situation in the way we might expect. But through the power of an eternal Spirit we can overcome those lusts of the flesh!
There are Old Testament verses that also refer to the principle that we reap what we sow. It is because of the mercy and compassion of God that we can have a home in heaven, despite our sin.
You will reap what you sow. We sowed iniquity and corruption, and Jesus reaped our punishment on the cross. Galatians There is a battle in the thought life. One lives in sin. May He be praised forever.
One can be tormented with thoughts of regret, anxiety, suspicion, unthankfulness, bitterness, discontent and all sorts of bad memories.