For I will (n) cleanse their blood [that] I have not cleansed: for the LORD dwelleth in Zion.
(n) He had allowed his Church before this to lie in their filthiness, but now he promises to cleanse them and to make them pure unto himself.
Related Commentaries of Joel 3:21
Joel 3:21
21 For I will cleanse their blood that I have not cleansed: for the LORD dwelleth in Zion.