Malachi 2:6

The law of truth Teaching, as a function of the priesthood, entered into the original idea and constitution of the office (Deuteronomy 33:10; Leviticus 10:11), and was revived in connection with it after the return from Babylon (Ezra 7:10; Ezra 7:25; Nehemiah 8:1-8). To be without "a teaching priest" was a national calamity (2 Chronicles 15:3).

And iniquity Rather And unrighteousness, R.V. This clause refers perhaps to the judicial decisions of the priest (Deuteronomy 17:8-13), as being without respect of persons and uninfluenced by bribes. (Deuteronomy 16:18-19.)

he walked with me&c. Comp. Genesis 5:22; Genesis 5:24; Genesis 6:9. The walk of the priest, in the peaceof a right relation to God, and the uprightness(R.V.) of a holy life, accorded with his teaching and his judicial sentences, and as the result of both he turned many away from iniquity.

"What a history of zeal for the glory of God and the conversion of sinners in those, of whom the world knows nothing; of whose working, but for the three words (many he-turned-away from-iniquity) in the closing book of the Old Testament, we should have known nothing!" Pusey.