John 16:7 “Nevertheless I tell you the truth; it is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.”
This is still a study on prayer in the Book of Acts. So, why am I referencing John? Because what happens in Acts 1:9-11 was mentioned by Christ to His disciples from before the crucifixion.
“It is expedient for you that I go away.”