And God, which knoweth the hearts - Acts 1:24. God thus knew whether they were true converts or not, and gave a demonstration that he acknowledged them as his.
Giving them the Holy Ghost ... - Acts 10:45-46.
Related Commentaries of Acts 15:8
Acts 15:8
8 And God, which knoweth the hearts, bare them witness, giving them the Holy Ghost, even as he did unto us;