Leviticus 25:54
And if he is not redeemed by these [means], then he shall go out in the year of jubilee, he, and his sons with him.
Exodus 21:2-3
If thou buy a Hebrew servant, six years he shall serve, and in the seventh he shall go out free for nothing.
Leviticus 25:40-41
He shall be with thee as a hired servant, and as a sojourner. He shall serve with thee to the year of jubilee.
Isaiah 49:9
saying to those who are bound, Go forth to those who are in darkness. Show yourselves. They shall feed in the ways, and their pasture shall be on all bare heights.
Isaiah 49:25
But thus says 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 who contends with thee, and I will save thy sons.
Isaiah 52:3
For thus says LORD: Ye were sold for nothing, and ye shall be redeemed without money.