Leviticus 25:54
And if he is not redeemed by [any of] these [ways], then he and his sons with him shall go out in the Year of Jubilee.
Exodus 21:2-3
'If you buy a Hebrew slave, he will serve six years, and in the seventh he will go out as free for nothing.
Leviticus 25:40-41
He shall be with you like a hired worker, like a temporary resident; he shall work with you until the Year of Jubilee.
Isaiah 49:9
saying to the {prisoners}, "Come out!" to those who [are] in darkness, "Show yourselves!" they shall feed {along} [the] ways, and their pasturage [shall be] on all [the] barren heights.
Isaiah 49:25
But thus says Yahweh: "Indeed a captive of [the] mighty shall be taken, and [the] war-booty [of] [the] tyrant shall be rescued, for I myself will dispute [with] your opponent, and I myself will save your children.
Isaiah 52:3
For thus says Yahweh: "You were sold for nothing, and you shall be redeemed without money."