'Redeemers' in the Bible

Then Naomi said to her daughter-in-law, “May he be blessed by the Lord, who has not forsaken his kindness to the living or the dead.” Naomi continued, “The man is a close relative. He is one of our family redeemers.”

and it cometh to pass in his reigning, at his sitting on his throne, he hath smitten the whole house of Baasha; he hath not left to him any sitting on the wall, and of his redeemers, and of his friends.