Mark 10:3-5

3 He answered them, "What did Moses command you?"
4 They said, "Moses allowed a man to write a certificate of dismissal and to divorce her."
5 But Jesus said to them, "Because of your hardness of heart he wrote this commandment for you.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.