And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
The difference is not of kind, but of degree. In the one case, the light of heaven has reached the dark chamber, dispelling night, but leaving some obscurity and some deep shadows. In the other, that light has filled the whole chamber, and made every corner bright. This state of the soul — being "filled with the Holy Ghost" — is the normal antecedent of true prophetic or miraculous power, but may exist without it; without it, in individuals who are never endowed with the gift either of prophecy or of miracles; without it, in individuals who have such powers, but in whom they are not in action, as in John the Baptist, before his ministry commenced.
(W. Arthur, M. A.)
Parallel VersesKJV: And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.