Bible Verses About Self-Denial: Paul

But I hold not my life of any account as dear unto myself, so that I may accomplish my course, and the ministry which I received from the Lord Jesus, to testify the gospel of the grace of God.

For though I was free from all men, I brought myself under bondage to all, that I might gain the more.

but I buffet my body, and bring it into bondage: lest by any means, after that I have preached to others, I myself should be rejected.