Malachi 2:13

And this ye have done again - , adding the second sin of cruelty to their wives to the taking foreign women; “they covered the altar of God with tears,” in that they by ill-treatment occasioned their wives to weep there to God; and God regarded this, as though they had stained the altar with their tears.

Insomuch that He regardeth not the offering anymore - God regarded the tears of the oppressed, not the sacrifices of the oppressors. He would not accept what was thus offered Him as a thing well-pleasing to Him, acceptable to win His good pleasure.