what a weariness is it! - Ye regard God’s service as irksome, and therefore try to get it over by presenting the most worthless offerings. Compare Mic 6:3, where God challenges His people to show wherein is the “weariness” or hardship of His service. Also Isa 43:22-24, wherein He shows that it is they who have “wearied” Him, not He who has wearied them.
snuffed at - despised.
it - the table of the Lord, and the meat on it (Mal 1:12).
torn - namely, by beasts, which it was not lawful to eat, much less to offer (Exo 22:31).
thus ... offering - Hebrew, mincha; the unbloody offering of flour, etc. Though this may have been of ordinary ingredients, yet the sacrifices of blemished animals accompanying it rendered it unacceptable.