'Redeemer' in the Bible

"'If your brother becomes impoverished and sells some of his property, his near redeemer is to come to you and redeem what his brother sold.

If a man has no redeemer, but he prospers and gains enough for its redemption,

As for me, I know that my Redeemer lives, and that as the last he will stand upon the earth.

May my words and my thoughts be acceptable in your sight, O Lord, my sheltering rock and my redeemer.