I laboured more than they all — That is, more than any of them, from a deep sense of the peculiar love God had shown me. Yet, to speak more properly, it is not I, but the grace of God that is with me — This it is which at first qualified me for the work, and still excites me to zeal and diligence in it.
Related Commentaries of 1 Corinthians 15:10
1 Corinthians 15:10
10 But by the grace of God I am what I am: and his grace which was bestowed upon me was not in vain; but I laboured more abundantly than they all: yet not I, but the grace of God which was with me.