“For Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day.”
King James Version (KJV)
15:21 Perhaps the connection is, To the Jews we need write nothing on these heads; for they hear the law continually.
Ac 15:21 For Moses . . . hath. There are synagogues in every city. The use of blood would shock the Jews who have membership in these.