# the baptism of repentance
You can translate the abstract noun "repentance" as the verb "repent." Alternate translation: "the baptism that people requested when they wanted to repent" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
# the one who would come
Here "the one" refers to Jesus.
# come after him
This means to come after John the Baptist in time and not following after him physically.