Matthew 23, Jesus warned the people about the teachers of the Law and the Pharisees. At that time they had formulated the Talmud, which regulated every aspect of Jewish life. He did it in the form of telling of seven woes. Read the chapter carefully and draw your own conclusions.
Deuteronomy 11. Love and Obey the LORD, remember all He has done, meditate day and night on it and always teach the same to your children. God set before them a blessing and a curse, it dealt with obedience.
Deuteronomy 12. God proclaimed the One Place of Worship. All other places of worship where false Gods have been worshiped must be destroyed. You may eat from all clean animals, but do not drink their blood.
Deuteronomy 13. Apostates must be severely punished.