Evidently he is particularly mentioned because he was the “mediator” (see Gal. 3:19; Deut. 5:5) through whom God’s instructions, His “statutes and judgments,” were given at Sinai (see Ex. 24:12-18; Neh. 10:29).

Malachi closes his prophecy with an admonition to his people to be obedient to God. Human obedience must precede divine blessing. It is significant that the prophet who closes the OT canon should stress the necessity and the importance of observing God’s instructions to His people given on Mt. “Horeb” (see Lev. 26; Deut. 28). It is significant also that “the law of Moses” was to play an important part in helping people prepare for the day of the Lord.