Thematic Bible: Why moses allowed divorce

They said to Him, "Why then did Moses command to GIVE HER A CERTIFICATE OF DIVORCE AND SEND her AWAY?" He said to them, "Because of your hardness of heart Moses permitted you to divorce your wives; but from the beginning it has not been this way.

Some Pharisees came up to Jesus, testing Him, and began to question Him whether it was lawful for a man to divorce a wife. And He answered and said to them, "What did Moses command you?" They said, "Moses permitted a man TO WRITE A CERTIFICATE OF DIVORCE AND SEND her AWAY." read more.
But Jesus said to them, "Because of your hardness of heart he wrote you this commandment. "But from the beginning of creation, God MADE THEM MALE AND FEMALE.