“And when they had prayed, the place was shaken where they were assembled together; and they were all filled with the Holy Ghost, and they spake the word of God with boldness.”
King James Version (KJV)
4:31 They were all filled - Afresh; and spake the word with boldness - So their petition was granted.
Ac 4:31 The place was shaken. As a sensible evidence that their prayer was granted, and then they were all filled with the Holy Ghost, as on Pentecost, so inspired that all fear was shaken off.