[A.W. Bowman]

This paragraph is very difficult.

Jesus had to under go a Tevilah in order to become ritually clean, prior to taking up His ministry as God's personal emissary (apostle) to the world. No one, except John's disciples, was baptized "into" the name of John (which is different than being baptized into John or into Christ as his disciple, or "the taking on of the name of" a rabbi). Rather, people were baptized in (by, through) the name of the authority in which the baptism is being performed, such as it was will known as "John's baptism".

Let me reword it.

Jesus had to under go a Tevilah in order to become ritually clean, prior to taking up His ministry as God's personal emissary (apostle) to the world. No one, except John's disciples, was baptized "into" the name of John (which is being baptized into John as a disciple, or in "the taking on of the name of" a rabbi). Rather, people were baptized in (by, through) the name of the authority in which the baptism is being performed, such as it was "John's baptism".

In context with the rest of the post, I hope this rework will make more sense.