Galatians 6:7-8

“Do not be deceived: God cannot be mocked. A man reaps what he sows. Whoever sows to please their flesh, from the flesh will reap destruction; whoever sows to please the Spirit, from the Spirit will reap eternal life.”

source https://www.biblegateway.com/passage/?search=Galatians%206:7-8&version=NIV

Philippians 2:14-16

“Do everything without grumbling or arguing, so that you may become blameless and pure, “children of God without fault in a warped and crooked generation.” Then you will shine among them like stars in the sky as you hold firmly to the word of life. And then I will be able to boast on the day of Christ that I did not run or labor in vain.”

source https://www.biblegateway.com/passage/?search=Philippians%202:14-16&version=NIV