6 Bible Verses about divorce, in OT

They said, "Moses permitted a man to write a certificate of divorce, and to put her away."

They said to him, "Why then did Moses command one to give a certificate of divorce, and to put her away?"

"It has also been said, 'Whoever divorces his wife, let him give her a certificate of divorce.'

And he answered them, "Have you not read that he who made them at the beginning 'made them male and female,' and said, 'For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh'? So they are no longer two, but one flesh. Therefore what God has joined together, let man not separate."read more.
They said to him, "Why then did Moses command one to give a certificate of divorce, and to put her away?" He said to them, "Because of the hardness of your hearts Moses permitted you to divorce your wives, but from the beginning it was not so.

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.' 'For this reason a man shall leave his father and mother and be joined to his wife,read more.
and the two shall become one flesh.' So they are no longer two, but one flesh. Therefore what God has joined together, let not man separate."

Some Pharisees came to him to test him. They asked, "Is it lawful for a man to divorce his wife for any and every reason?"