'Descending' in the Bible

Then John testified, "I saw the Spirit descending like a dove from heaven, and it remained on him.

And I did not recognize him, but the one who sent me to baptize with water said to me, 'The one on whom you see the Spirit descending and remaining -- this is the one who baptizes with the Holy Spirit.'

He continued, "I tell all of you the solemn truth -- you will see heaven opened and the angels of God ascending and descending on the Son of Man."