Leviticus 25:54
If he isn't redeemed by these means, then he shall be released in the Year of Jubilee, he, and his children with him.
Exodus 21:2-3
"If you buy a Hebrew servant, he shall serve six years and in the seventh he shall go out free without paying anything.
Leviticus 25:40-41
As a hired servant, and as a temporary resident, he shall be with you; he shall serve with you until the Year of Jubilee:
Isaiah 49:9
saying to those who are bound, 'Come out!'; to those who are in darkness, 'Show yourselves!' "They shall feed in the ways, and on all bare heights shall be their pasture.
Isaiah 49:25
But thus says Yahweh, "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 who contends with you, and I will save your children.
Isaiah 52:3
For thus says Yahweh, "You were sold for nothing; and you shall be redeemed without money."