1 Corinthians 15:14, 58
1 Corinthians 15:14 NLT
And if Christ has not been raised, then all our preaching is useless, and your faith is useless.
1 Corinthians 15:58 NLT
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.