[People from] Jerusalem and all over Judea and the region around the Jordan River all went out [to the desert] to [hear] him,

and people were immersed by him in the Jordan River as they confessed their sins.

Jesus then came from [the province of] Galilee to be immersed by John in the Jordan River.

[Isa. 9:1-2] "The districts of Zebulun and Naphtali, near the lake, beyond [i.e., where it enters] the Jordan in Galilee, [the territory] of the Gentiles;

Large crowds followed Him from Galilee, Decapolis, Jerusalem, Judea and from beyond [i.e., the east side of] the Jordan River.

And so when Jesus had finished speaking He left Galilee and came to the region of Judea, on the east side of the Jordan River.