In this verse, John the Baptist was preaching in Judea and began baptizing new believers in the river Jordan, saying,
Truly, I give baptism with water to those of you whose hearts are changed; but he who comes after me is greater than I, whose shoes I am not good enough to take up; he will give you baptism with the Holy Spirit and with fire.
The baptism of “water, Holy Spirit and fire.” is a fascinating topic. It is represented by and related to Moses’ Tabernacle, the Israelite’s portable holy place of worship where God interacted with them. It is also the proof that God exists, which so many people struggle over.