NOW [when I was] in [my] thirtieth year, in the fourth month, in the fifth day of the month, as I was in the midst of captivity beside the river Chebar [in Babylonia], the heavens were opened and I saw visions of God.
Then He said to him, I assure you, most solemnly I tell you all, you shall see heaven opened, and the angels of God ascending and descending upon the Son of Man! [Gen. 28:12; Dan. 7:13.]
From the baptism of John at the outset until the day when He was taken up from among us–one of these men must join with us and become a witness to testify to His resurrection.