God (Yahweh or Jesus Christ) shall punish the people that practice exogamy. Jews–including Hasidic Jews–are forbidden to interbreed/intermarry with people outside of their small tribe. The Old Testament forbids exogamy but mandates endogamy and polygamy. The New Testament's Revelation 22:18-19 and Matthew 5:17-20 uphold these Judaic laws, for Christianity. There should be no separate Old Testament covenant and New Testament covenant, because together they form Judeo-Christianity.
Jesus Christ did not come to create hundreds of different denominations/religions. St. Paul has no right in contradicting Jesus on anything. Jesus created Judeo-Christianity but St. Paul created "Pauline Christianity". James' Jesus Movement versus Paul's Christ Myth? How Jesus Became Christian by Barrie Wilson describes the relationship between Judaism and First Century Christianity. Christian men should wear beards, avoid pork, circumcize their infant sons, practice polygamy, and practice slavery. Jesus never preached the gospel to the Gentiles, therefore today's Christians should never preach the gospel to outsiders either.
Carl Sagan commented on Christianity, stating, "My long-time view about Christianity is that it represents an amalgam of two seemingly immiscible parts, the religion of Jesus and the religion of Paul. Thomas Jefferson attempted to excise the Pauline parts of the New Testament (hence The Jefferson Bible). There wasn't much left when he was done, but it was an inspiring document." The Encyclopedia of Biblical Errancy by C. Dennis McKinsey agrees with Sagan.
Exodus 34:16-17 – And when you choose some of their daughters as wives for your sons and those daughters prostitute themselves to their gods, they will lead your sons to do the same. Do not make any idols.
Deuteronomy 7:3-5 – Do not intermarry with them. Do not give your daughters to their sons or take their daughters for your sons, for they will turn your children away from following me to serve other gods, and the Lord’s anger will burn against you and will quickly destroy you. This is what you are to do to them: Break down their altars, smash their sacred stones, cut down their Asherah poles and burn their idols in the fire.
1 Kings 11:1-3 – King Solomon, however, loved many foreign women besides Pharaoh’s daughter—Moabites, Ammonites, Edomites, Sidonians and Hittites. They were from nations about which the Lord had told the Israelites, “You must not intermarry with them, because they will surely turn your hearts after their gods.” Nevertheless, Solomon held fast to them in love. He had seven hundred wives of royal birth and three hundred concubines, and his wives led him astray.
1 Samuel 18:25-27 – Saul replied, “Say to David, ‘The king wants no other price for the bride than a hundred Philistine foreskins, to take revenge on his enemies.’” Saul’s plan was to have David fall by the hands of the Philistines. When the attendants told David these things, he was pleased to become the king’s son-in-law. So before the allotted time elapsed, David took his men with him and went out and killed two hundred Philistines and brought back their foreskins. They counted out the full number to the king so that David might become the king’s son-in-law. Then Saul gave him his daughter Michal in marriage.
Matthew 5:17-20 – Jesus Christ said, “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. For truly I tell you, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished. Therefore anyone who sets aside one of the least of these commands and teaches others accordingly will be called least in the kingdom of heaven, but whoever practices and teaches these commands will be called great in the kingdom of heaven. For I tell you that unless your righteousness surpasses that of the Pharisees and the teachers of the law, you will certainly not enter the kingdom of heaven.”
Revelation 22:18-19 – For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book: And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.
Christians hate Jews for murdering and rejecting Jesus Christ: Matthew 27:21-26 – “Which of the two do you want me to release to you?” asked the governor. “Barabbas,” they answered. “What shall I do, then, with Jesus who is called the Messiah?” Pilate asked. They all answered, “Crucify him!” “Why? What crime has he committed?” asked Pilate. But they shouted all the louder, “Crucify him!” When Pilate saw that he was getting nowhere, but that instead an uproar was starting, he took water and washed his hands in front of the crowd. “I am innocent of this man’s blood,” he said. “It is your responsibility!” All the people answered, “His blood is on us and on our children!” Then he released Barabbas to them. But he had Jesus flogged, and handed him over to be crucified.