1 Corinthians 15:33-34, 58

Don’t be fooled by those who say such things, for “bad company corrupts good character.” Think carefully about what is right, and stop sinning. For to your shame I say that some of you don’t know God at all.

So, my dear brothers and sisters, be strong and immovable. Always work enthusiastically for the Lord, for you know that nothing you do for the Lord is ever useless.