Matthew 3:11-12

I indeed baptize you in (with) water because of repentance [that is, because of your changing your minds for the better, heartily amending your ways, with abhorrence of your past sins]. But He Who is coming after me is mightier than I, Whose sandals I am not worthy or fit to take off or carry; He will baptize you with the Holy Spirit and with fire. His winnowing fan (shovel, fork) is in His hand, and He will thoroughly clear out and clean His threshing floor and gather and store His wheat in His barn, but the chaff He will burn up with fire that cannot be put out.