Exodus 21:4-6

New Century Version

⁴ If the slave’s master gives him a wife, and she gives birth to sons or daughters, the woman and her children will belong to the master. When the slave is set free, only he may leave.

⁵ “But if the slave says, ‘I love my master, my wife and my children, and I don’t want to go free,’ ⁶ then the slave’s master must take him to God. The master is to take him to a door or doorframe and punch a hole through the slave’s ear using a sharp tool. Then the slave will serve that master all his life.