Jesus had already deposited His Spirit into the members of His “little flock,” those who will inherit the Kingdom on earth (Luke 12:32) as seen here in John 20:22, “And when he had said this, he breathed on them, and saith unto them, Receive ye the Holy Ghost:”

Now we must come to understand the difference between the "Spirit UPON" and the "Spirit IN." It was only during what Paul calls "time past," while "the Law" was applicable upon Israel that "the Spirit of the Lord" came "UPON" men.

Now we should note the contrast between Israel's "Old Covenant" and Jesus' promise of a "New Covenant." The words of Jesus were:

"This cup is the New Covenant In My Blood, which is shed for you"; "drink ye all of it"; "this do ye...in remembrance of me"; "and they all drank of it" (Luke 22:20, Matt. 26:27, 1 Cor. 11:26, Mark 14:23).