Every seventh year, each of you must free his Hebrew brother who has sold himself to you. He may serve you six years, but then you must let him go free. But your fathers did not listen or incline their ear.

Exodus 21:2
If you buy a Hebrew servant, he is to serve you for six years. But in the seventh year, he shall go free without paying anything.

Deuteronomy 15:12
If a fellow Hebrew, a man or a woman, is sold to you and serves you six years, then in the seventh year you must set him free.

1 Samuel 8:7
And the LORD said to Samuel, "Listen to the voice of the people in all that they say to you. For it is not you they have rejected, but they have rejected Me as their king.

1 Samuel 8:8
Just as they have done from the day I brought them up out of Egypt until this day, forsaking Me and serving other gods, so they are doing to you.

1 Kings 9:22
But Solomon did not consign any of the Israelites to slavery, because they were his men of war, his servants, his officers, his captains, and the commanders of his chariots and cavalry.

2 Kings 17:13
Yet through all His prophets and seers, the LORD warned Israel and Judah, saying, "Turn from your wicked ways and keep My commandments and statutes, according to the entire Law that I commanded your fathers and delivered to you through My servants the prophets."

2 Kings 17:14
But they would not listen, and they stiffened their necks like their fathers, who did not believe the LORD their God.

Jeremiah 34:8
After King Zedekiah had made a covenant with all the people in Jerusalem to proclaim liberty, the word came to Jeremiah from the LORD

Jeremiah 35:15
Again and again I have sent you all My servants the prophets, proclaiming: 'Turn now, each of you, from your wicked ways, and correct your actions. Do not go after other gods to serve them. Live in the land that I have given to you and your fathers.' But you have not inclined your ear or listened to Me.

At the end of seven years let you go every man his brother an Hebrew, which has been sold to you; and when he has served you six years, you shall let him go free from you: but your fathers listened not to me, neither inclined their ear.