Luke 3:21

Now it happened in the thirtieth year, on the fifth day of the fourth month, while I was by the river Chebar among the exiles, that the heavens were opened, and I saw visions of God.

Now it happened some eight days after these words, that taking along Peter and John and James, He went up on the mountain to pray.

And it happened that while He was praying, the appearance of His face became different, and His clothing became white and gleaming.

And He *said to him, “Truly, truly, I say to you, you will see the heavens opened and the angels of God ascending and descending on the Son of Man.”

beginning with the baptism of John until the day that He was taken up from us—one of these must become a witness with us of His resurrection.”

The Baptism of Jesus