Luke 3: 15 - 16, 21 - 22
15 As the people were in expectation, and all men questioned in their hearts concerning John, whether perhaps he were the Christ,
16 John answered them all, "I baptize you with water; but he who is mightier than I is coming, the thong of whose sandals I am not worthy to untie; he will baptize you with the Holy Spirit and with fire.
21 Now when all the people were baptized, and when Jesus also had been baptized and was praying, the heaven was opened,
22 and the Holy Spirit descended upon him in bodily form, as a dove, and a voice came from heaven, "Thou art my beloved Son; with thee I am well pleased."

EWTN