Which said ... - Deuteronomy 18:15, Deuteronomy 18:18. See this explained, Acts 3:22. Stephen introduced this to remind them of the promise of a Messiah; to show his faith in that promise; and “particularly” to remind them of their obligation to hear and obey him.
Related Commentaries of Acts 7:37
Acts 7:37
37 This is that Moses, which said unto the children of Israel, A prophet shall the Lord your God raise up unto you of your brethren, likeb unto me; him shall ye hear.