Moses
Leviticus 25:49BSB·traditional attribution

either his uncle or cousin or any close relative from his clan may redeem him. Or if he prospers, he may redeem himself.

Matthew Henry Presbyterian @wholebiblehenry

We have here the laws concerning servitude, designed to preserve the honour of the Jewish nation as a free people, and rescued by a divine power out of the house of bondage, into the glorious liberty of God's sons, his first-born. Now the law is, I. That a native Israelite should never be made a bondman for perpetuity.

Commenting on Leviticus 25:39-55

John Gill Reformed Baptist @doctorgill

Either his uncle, or his uncle's son, may redeem him,.... it is father's brother or his father's brother's son, as the Targums of Onkelos and Jonathan: or any that is nigh kin unto him of his family may redeem him; from whence it appears, that it must be a near kinsman that has to be the redeemer, as in another case, the redemption of inheritances...

Geneva Bible Notes Reformed @genevanotes

Either his uncle, or his uncle's son, may redeem him, or [any] that is nigh of kin unto him of his family may redeem him; or if he be able, he may redeem himself. (u) If he be able.