Our Lord did not baptize with the baptism wherewith He had been baptized; for He was baptized by a servant, as a lesson of humility to us, and in order to bring us to the Lord’s baptism, i. e. His own; for Jesus baptized, as the Lord, the Son of God.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tr. xiii. c. 4