Matthew 19:6

⁴He answered, “Haven’t you read that he who made them from the beginning made them male and female,

⁵and said, ‘For this cause a man shall leave his father and mother, and shall join to his wife; and the two shall become one flesh?’

⁶So that they are no more two, but one flesh. What therefore God has joined together, don’t let man tear apart.”

⁷They asked him, “Why then did Moses command us to give her a bill of divorce, and divorce her?”

⁸He said to them, “Moses, because of the hardness of your hearts, allowed you to divorce your wives, but from the beginning it has not been so.