Their heart was not steadfast toward him; they were not faithful to his covenant.
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
For their heart was not right with him. There was no depth in their repentance, it was not heart work. They were fickle as a weathercock, every wind turned them, their mind was not settled upon God. Neither were they stedfast in his covenant. Their promises were no sooner made than broken, as if only made in mockery.
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