1 Corinthians 4:12

4:12 We do hard work, toiling with our own hands. When we are verbally abused, we respond with a blessing, when persecuted, we endure,

1 Corinthians 16:16

16:16 also to submit to people like this, and to everyone who cooperates in the work and labors hard.

1 Corinthians 15:10

15:10 But by the grace of God I am what I am, and his grace to me has not been in vain. In fact, I worked harder than all of them – yet not I, but the grace of God with me.