8:1 [Set] the trumpet to thy {a} mouth. [He shall come] as an eagle against the house of the LORD, because they have transgressed my covenant, and trespassed against my law.
(a) God encourages the Prophet to signify the speedy coming of the enemy against Israel, which was once the people of God.
8:1 Set the trumpet - The Lord here commands the prophet to publish, as by sound of trumpet, that which God will bring upon apostate Israel. He - The king of Assyria. As an eagle - Swift, hungry, surmounting all difficulties. House of the Lord - The family of Israel, the Israelites church.
8:1-4 When Israel was hard pressed, they would claim protection from God, but this would be disregarded. What stead will it stand in to say, My God, I know thee, if we cannot say, My God, I love thee, serve thee, and cleave to thee only?