For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
For John truly baptized with water; but ye shall be baptized with the Holy Spirit not many days hence.
The number of "days hence" (from the Ascension to the descent of the Spirit) we know to have been exactly ten; because as 50 days had to intervene between Passover and Pentecost (Leviticus 23:15-16), and 40 of these had already been spent by our risen Lord upon earth, there remained but ten more until Pentecost, when the Spirit was to descend. But Jesus, instead of telling all this to the disciples, uses the indefinite expression, "not many days hence" - doubtless to keep their expectations awake.