How many thousands— The original is μυριαδες, myriads, which may only denote in general a great number; and if we consider what a vast confluence there must have been at Jerusalem on occasion of this great festival, we need not be surprised at the expression. See Acts 21:27.
Related Commentaries of Acts 21:20
Acts 21:20
20 And when they heard it, they glorified the Lord, and said unto him, Thou seest, brother, how many thousands of Jews there are which believe; and they are all zealous of the law: