John gave an answer to all, saying, “I indeed baptize you with water, but there is coming one who is mightier (ischuroteros | ἰσχυρότερος | nom sg masc comparative) than I, of whom I am not worthy to untie the thong of his sandals. He it is who will baptize you with the Holy Spirit and fire.
Reference
Luke 3:16
Sequence
6