In a matter which has been related by others, Luke has rightly given us only a summary, and has left more to be understood than expressed in the fact, that our Lord was baptized by John. As it is said, Now when all were baptized, it came to pass. Our Lord was baptized not that He might be cleansed by the waters but to cleanse them, that being purified by the flesh of Christ who knew no sin, they might possess the power of baptism.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).