John Chrysostom

"Whereunto I labor also, striving." And he said not, "I am desirous" merely, nor in any indifferent way, but "I labor, striving," with great earnestness, with much watching. If I, for your good, thus watch, much more ought ye. Then again, showing that it is of God, he saith, "according to His working which worketh in me mightily." He shows that this is the work of God. He, now, that makes me strong for this, evidently wills it. Wherefore also when beginning he saith, "Through the will of God." So that it is not only out of modesty he so expresses himself, but insisting on the truth of the Word as well. "And striving." In saying this, he shows that many are fighting against him. Then great is his tender affection.