1 Corinthians 15:10 But, by the grace from God I am who I am. And His grace, the one upon me, will not come to be without results, but I toil more abundantly than all of them. Indeed, not I but the grace from God, the one with me.
Paul received the position of an Apostle because of God’s attitude by which He gives a benefit without consideration of merit (grace). A position that Paul felt he did not deserve because he persecuted the church, yet, God saw fit to place him in it. Understanding this, Paul states that this grace will not come to be without result, for he labored intensely far above the other Apostles. However, Paul does not give himself credit for the toil, for it was not him, but the grace that was