The burden of the word of the LORD to Israel by Malachi.
The burden of the word of the Lord - the heavy sentence.
To Israel - represented now by the two tribes of Judah and Benjamin, with individuals of the ten tribes who had returned with the Jews from Babylon. So "Israel" is used, Ezra 7:10. Compare 2 Chronicles 21:2, "Jehoshaphat king of Israel," where Judah, rather than the ten tribes, is regarded as the truest representative of Israel (cf. 2 Chronicles 12:6; 2 Chronicles 28:19).
Malachi - see Introduction. God sent no prophet after him until John the Baptist, the forerunner of Christ, in order to inflame His people with the more ardent desire for Him, the great antitype and fulfiller of prophecy.