You have said, It is vain to serve God: and what profit is it that we have kept his ordinance, and that we have walked in mourning before the LORD of hosts?
All Commentaries on Malachi 3:14 Go To Malachi 3
George Leo Haydock
AD 1849
Vain. Murmuring against God is blasphemous and unsufferable. When the Jews were punished by famine, for neglecting to pay tithes, they laid the blame on God, as if he took more care of other nations which had abundance. (Worthington)
Sorrowful: "humbled. "Chaldean, "in mourning. "(Junius)
But is seems to denote downcast countenances, which our Saviour orders his disciples not to affect, Matthew vi. 16. (Calmet)