Verse 11. - Concerning the Law. Others translate, "for instruction." Ask the priests these two legal questions, such as they were appointed to expound (Deuteronomy 17:8, etc.; Deuteronomy 33:10; Malachi 2:7). By this appeal the prophet makes his lesson sink deeper into the people's mind.

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.Thus saith the Lord of hosts,.... To Haggai the prophet:

ask now the priests concerning the law; whose business it was to understand it, and teach it, and to answer questions, and resolve doubts concerning it; not of their own heads, and according to their fancies, will, and pleasure; but according to the rules and instructions given in the word of God: and as this was their office, they were the proper persons to apply to; and Haggai, though a prophet, is sent to the priests to propose questions to them; though it may be not so much for his own information, as for the conviction of the priests of their impurity, out of their own mouths, and of the people by them:

saying; putting the following questions to them.