Matthew 3:15

And Jesus answering said unto him, Suffer it to be so now--"Let it pass for the present"; that is, "Thou recoilest, and no wonder, for the seeming incongruity is startling; but in the present case do as thou art bidden." for thus it becometh us--"us," not in the sense of me and thee," or "men in general," but as in Joh 3:11. to fulfil all righteousness--If this be rendered, with SCRIVENER, "every ordinance," or, with CAMPBELL, "every institution," the meaning is obvious enough; and the same sense is brought out by "all righteousness," or compliance with everything enjoined, baptism included. Indeed, if this be the meaning, our version perhaps best brings out the force of the opening word "Thus." But we incline to think that our Lord meant more than this. The import of circumcision and of baptism seems to be radically the same. And if our remarks on the circumcision of our Lord (see on Luk 2:21-24) are well founded, He would seem to have said, "Thus do I impledge Myself to the whole righteousness of the Law--thus symbolically do enter on and engage to fulfil it all." Let the thoughtful reader weigh this. Then he suffered him--with true humility, yielding to higher authority than his own impressions of propriety. Descent of the Spirit upon the Baptized Redeemer (Mat 3:16-17).

At the start of this chapter, concerning the baptism of John, begins the gospel (Mar 1:1); what went before is but preface or introduction; this is "the beginning of the gospel of Jesus Christ." And Peter observes the same date, Act 1:22, beginning from the baptism of John, for then Christ began first to appear in him, and then to appear to him, and by him to the world. Here is, I. The glorious rising of the morning-star - John the Baptist (Mat 3:1). 1. The doctrine he preached (Mat 3:2). 2. The fulfilling of the scripture in him (Mat 3:3). 3. His manner of life (Mat 3:4). 4. The resort of multitudes to him, and their submission to his baptism (Mat 3:5, Mat 3:6). 5. His sermon that he preached to the Pharisees and Sadducees, wherein he endeavours to bring them to repentance (Mat 3:7-10), and so to bring them to Christ (Mat 3:11, Mat 3:12). II. The more glorious shining forth of the Sun of righteousness, immediately after: where we have, 1. The honour done by him to the baptism of John (Mat 3:13-15). 2. The honour done to him by the descent of the Spirit upon him, and a voice from heaven (Mat 3:16, Mat 3:17).

3:15 for we must carry out all that God requires: Or for we must fulfill all righteousness. This statement refers to accomplishing what the Old Testament demanded or foreshadowed (e.g., Jer 31:31-34). “Righteousness” in Matthew refers to behavior that conforms to God’s will (see Matt 5:20; 6:1, 33; 21:32).