Matthew 19:5-8

Moffatt(i) 5 said, Hence a man shall leave his father and mother, and cleave to his wife, and the pair shall be one flesh? 6 So they are no longer two, but one flesh. What God has joined, then, man must not separate." 7 They said to him, "Then why did Moses lay it down that we were to divorce by giving a separation-notice?" 8 He said to them, "Moses permitted you to divorce your wives, on account of the hardness of your hearts, but it was not so from the beginning.