1 Timothy 1:12-14:
And I thank Christ Jesus our Lord, who hath enabled me, for that he counted me faithful, putting me into the ministry;
...Having said therefore that "the Gospel was committed to his trust"; lest this should seem to be said from pride, he checks himself at once, adding by way of correction, "I thank Christ Jesus our Lord, who hath enabled me, for that He counted me faithful, putting me into the ministry." Thus everywhere, we see, he conceals his own merit, and ascribes everything to God, yet so far only, as not to take away free will. For the unbeliever might perhaps say, If everything is of God, and we contribute nothing of ourselves, while He turns us, as if we were mere wood and stone, from wickedness to the love of wisdom, why then did He make Paul such as he was, and not Judas? To remove this objection, mark the prudence of his expression, "Which was committed," he says, "to my trust." This was his own excellence and merit, but not wholly his own; for he says, "I thank Christ Jesus, who enabled me." This is God's part: then his own again, "Because He counted me faithful." Surely because he would be serviceable of his own part.
Thus we see him acknowledge both his own part and that of God, and whilst he ascribes the greater part to the providence of God, he extenuates his own, yet so far only, as we said before, as was consistent with free will. And what is this, "Who enabled me"? I will tell you. He had so heavy a burden to sustain, that he needed much aid from above... This was the effect of no human power, and yet not of Divine influence alone, but of his own resolution also. For that Christ chose him with a foreknowledge of what he would be, is plain from the testimony He bore to him before the commencement of his preaching. "He is a chosen vessel unto me, to bear my name before the Gentiles and kings." (Acts 9:15.)..."I thank the Lord, who hath enabled me." Observe how he thanks God even for that which was his own part....What then does he mean when he says, "He counted me faithful"? He would give up no right of his Master's: even his own part he ascribed to Him, and assumed nothing to himself, nor claimed for his own the glory which was due to God...