Thus saith the LORD of hosts; Ask now the priests concerning the law, saying,

Wesley's Notes

2:11 Concerning the law - What the law saith in this case.

Jamieson-Fausset-Brown Bible Commentary

11. Ask . the priests-Propose this question to them on the law. The priests were the authorized expounders of the law (Le 10:11; De 33:10; Eze 44:23; Mal 2:7).

Matthew Henry's Concise Commentary

2:10-19 Many spoiled this good work, by going about it with unholy hearts and hands, and were likely to gain no advantage by it. The sum of these two rules of the law is, that sin is more easily learned from others than holiness. The impurity of their hearts and lives shall make the work of their hands, and all their offerings, unclean before God. The case is the same with us. When employed in any good work, we should watch over ourselves, lest we render it unclean by our corruptions. When we begin to make conscience of duty to God, we may expect his blessing; and whoso is wise will understand the loving-kindness of the Lord. God will curse the blessings of the wicked, and make bitter the prosperity of the careless; but he will sweeten the cup of affliction to those who diligently serve him.