They did not keep God’s covenant, but refused to walk according to his law.
PSALM 78 To comprehend many things within small compass, it is to be observed, that in this psalm there are two leading topics. On the one hand, it is declared how God adopted for himself a Church from the posterity of Abraham, how tenderly and graciously he cherished it, how wonderfully he brought it out of Egypt, and how varied were the blessings which he bestowed upon it.
Commenting on Psalm 78:1-72
They kept not the covenant of God. Vows and promises were broken, idols were set up, and the living God was forsaken. They were brought out of Egypt in order to be a people separated unto the Lord, but they fell into the sins of other nations, and did not maintain a pure testimony for the one only true God. And refused to walk in his law.
In these verses, I. The psalmist observes the late rebukes of Providence that the people of Israel had been under, which they had brought upon themselves by their dealing treacherously with God, Psa 78:9-11. The children of Ephraim, in which tribe Shiloh was, though they were well armed and shot with bows, yet turned back in the day of battle.
Commenting on Psalm 78:9-39