en_tn_condensed/luk/03/16.md

I baptize you with water

"I baptize you using water" or "I baptize you by means of water"

not worthy even to untie the strap of his sandals

"not important enough even to loosen the straps of his sandals." This was a duty of a slave. John was saying that the one who would come is so great that John was not even worthy enough to be his slave.

He will baptize you with the Holy Spirit and with fire

"He will baptize you using the Holy Spirit and fire" or "He will baptize you in the Holy Spirit and fire"