Matthew 19:7-8 They say unto him, Why did Moses then command to give a bill of divorce and to put her away?

EJ2000⁽ⁱ⁾ ⁷ They say unto him, Why did Moses then command to give a bill of divorce and to put her away? ⁸ He said unto them, Moses, because of the hardness of your hearts, suffered you to put away your wives, but from the beginning it was not so.