“But Jesus answered him.

‘Let it be so now.

It is proper for us

In this way

For us

To fulfill

All righteousness.’

Then he consented.”

ἀποκριθεὶς δὲ ὁ Ἰησοῦς εἶπεν αὐτῷ Ἄφες ἄρτι·οὕτως γὰρ πρέπον ἐστὶν ἡμῖν πληρῶσαι πᾶσαν δικαιοσύνην. τότε ἀφίησιν αὐτόν.

Why did Jesus need to be baptized, since he was not a sinner?  Some of the early Christians were not pleased about this baptismal action, since it seemed to show that John was more important.  Jesus responded to John (ἀποκριθεὶς δὲ ὁ Ἰησοῦς εἶπεν αὐτῷ).  He wanted his baptism by John to be done now (Ἄφες ἄρτι·οὕτως), because it was a proper and a fitting thing to do (γὰρ πρέπον ἐστὶν ἡμῖν).  The purpose of this baptismal action was to show that Jesus was obedient to the divine will as a complete righteous person (πληρῶσαι πᾶσαν δικαιοσύνην).  Jesus had come to proclaim his higher ethical judgment of righteousness.  He was willing to submit to the baptism of John.  John the Baptist no longer hesitated, as he agreed to baptize Jesus (τότε ἀφίησιν αὐτόν).  There was no discussion like this in Mark, chapter 1:9 and Luke, chapter 3:21, just Jesus being baptized.