3:5-9 The ministers about whom the Corinthians contended, were only instruments used by God. We should not put ministers into the place of God. He that planteth and he that watereth are one, employed by one Master, trusted with the same revelation, busied in one work, and engaged in one design. They have their different gifts from one and the same Spirit, for the very same purposes; and should carry on the same design heartily. Those who work hardest shall fare best. Those who are most faithful shall have the greatest reward. They work together with God, in promoting the purposes of his glory, and the salvation of precious souls; and He who knows their work, will take care they do not labour in vain. They are employed in his husbandry and building; and He will carefully look over them.

5. Who then—Seeing then that ye severally strive so for your favorite teachers, "Who is (of what intrinsic power and dignity) Paul?" If so great an apostle reasons so of himself, how much more does humility, rather than self-seeking, become ordinary ministers!

Paul … Apollos—The oldest manuscripts read in the reverse order, "Apollos," &c. Paul." He puts Apollos before himself in humility.

but ministers, &c.—The oldest manuscripts have no "but." "Who is Apollos … Paul? (mere) ministers (a lowly word appropriate here, servants), by whom (not "in whom"; by whose ministrations) ye believed."

as … Lord gave to every man—that is, to the several hearers, for it was God that "gave the increase" (1Co 3:6).