"And now the people was full of expectation; all had the same surmise in their hearts, whether John might not be the Christ. But John gave them their answer by saying publicly, As for me, I am baptizing you with water; but one is yet to come who is mightier than I, so that I am not worthy to untie the strap of his shoes. He will baptize you with the Holy Ghost and with fire. It was while all the people were being baptized that Jesus was baptized too, and stood there praying. Suddenly heaven was opened, and the Holy Spirit came down upon him in bodily form, like a dove, and a voice came from heaven, which said, Thou art my beloved Son, in thee I am well pleased." -Knox Bible
"The people were filled with expectation, and all were asking in their hearts whether John might be the Christ (Messiah). John answered them all, saying, 'I am baptizing you with water, but one mightier than I is coming. I am not worthy to loosen the thongs of his sandals. He will baptize you with the Holy Spirit and fire.' After all the people had been baptized and Jesus also had been baptized and was praying, heaven was opened and the Holy Spirit descended upon him in bodily form like a dove. And a voice came from heaven, 'You are my beloved Son; with you I am well pleased.'” -NAB(RE)
* [3:16] He will baptize you with the holy Spirit and fire: in contrast to John’s baptism with water, Jesus is said to baptize with the holy Spirit and with fire. From the point of view of the early Christian community, the Spirit and fire must have been understood in the light of the fire symbolism of the pouring out of the Spirit at Pentecost (Acts 2:1–4); but as part of John’s preaching, the Spirit and fire should be related to their purifying and refining characteristics (Ez 36:25–27; Mal 3:2–3). See note on Mt 3:11.
* [3:21–22] This episode in Luke focuses on the heavenly message identifying Jesus as Son and, through the allusion to Is 42:1, as Servant of Yahweh. The relationship of Jesus to the Father has already been announced in the infancy narrative (Lk 1:32, 35; 2:49); it occurs here at the beginning of Jesus’ Galilean ministry and will reappear in Lk 9:35 before another major section of Luke’s gospel, the travel narrative (Lk 9:51–19:27). Elsewhere in Luke’s writings (Lk 4:18; Acts 10:38), this incident will be interpreted as a type of anointing of Jesus.
* [3:21] Was praying: Luke regularly presents Jesus at prayer at important points in his ministry: here at his baptism; at the choice of the Twelve (Lk 6:12); before Peter’s confession (Lk 9:18); at the transfiguration (Lk 9:28); when he teaches his disciples to pray (Lk 11:1); at the Last Supper (Lk 22:32); on the Mount of Olives (Lk 22:41); on the cross (Lk 23:46).
* [3:22] You are my beloved Son; with you I am well pleased: this is the best attested reading in the Greek manuscripts. The Western reading, “You are my Son, this day I have begotten you,” is derived from Ps 2:7.