Maybe you have never read Galatians
Galatians 6:7-9New American Standard Bible (NASB)
[SUP]7 [/SUP]Do not be deceived, God is not mocked; for whatever a man sows, this he will also reap. [SUP]8 [/SUP]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. [SUP]9 [/SUP]Let us not lose heart in doing good, for in due time we will reap if we do not grow weary.