Matthew 3:15 - Ellicott's Commentary On The Whole Bible

Suffer it to be so now. — The “now” is emphatic, at the present time, in contrast with what was to follow. Hereafter, John should be the receiver and not the giver, but as yet there was a fitness in each retaining his position (the words “it becometh us” seem to refer to both, not to the speaker only). The word and the thought are the same as those of Hebrews 2:10. Even He had to pass through the normal stages of growth, and so an outward ordinance was even for Him the appointed way to the fulness of spiritual power. He was in His place receiving that rite. John was doing his proper work in administering it.