'Redeemer' in the Bible

lest the redeemer of blood pursue after the man-slayer when his heart is hot, and hath overtaken him (because the way is great), and hath smitten him -- the life, and he hath no sentence of death, for he is not hating him heretofore;

then the elders of his city have sent and taken him from thence, and given him into the hand of the redeemer of blood, and he hath died;