1 Corinthians 15:14, 58

And if Christ has not been raised, all of our preaching has been for nothing and your faith is useless.

So now, beloved ones, stand firm, stable, and enduring. Live your lives with an unshakable confidence. We know that we prosper and excel in every season by serving the Lord, because we are assured that our union with the Lord makes our labor productive with fruit that endures.