1 Corinthians 15:10-12

10 But by the grace of God I am what I am. His grace which was bestowed on me was not futile, but I worked more than all of them; yet not I, but the grace of God which was with me.

11 Whether then it is I or they, so we proclaim, and so you believed.

12 Now if Messiah is preached, that he has been raised from the dead, how do some among you say that there is no resurrection of the dead?