Leviticus 25:54
And if he be not redeemed in these years, then he shall go out in the year of jubilee, both he, and his children with him.
Exodus 21:2-3
If you buy a Hebrew servant, six years he shall serve: and in the seventh he shall go out free for nothing.
Leviticus 25:40-41
But as a hired servant, and as a sojourner, he shall be with you, and shall serve you until the year of jubilee:
Isaiah 49:9
That you may say to the prisoners, Go forth; to them that are in darkness, Show yourselves. They shall feed in the ways, and their pastures shall be in all high places.
Isaiah 49:25
But thus says the LORD, Even the captives of the mighty shall be taken away, and the prey of the terrible shall be delivered: for I will contend with him that contends with you, and I will save your children.
Isaiah 52:3
For thus says the LORD, You have sold yourselves for nothing; and you shall be redeemed without money.