Mark 10:1-4

1Getting up, He left there (Capernaum) and went to the region of Judea and beyond the Jordan; and crowds gathered around Him again and accompanied Him, and as was His custom, He once more began to teach them.

2Pharisees came to Jesus to test Him [intending to trick Him into saying something wrong], and asked Him, “Is it lawful [according to Scripture] for a man to divorce his wife and send her away?”

3He replied to them, “What did Moses command you?”

4They said, “Moses allowed a man to write a certificate of divorce and to send her away.”