Verse 45. And he remembered for them his covenant. The covenant is the sure foundation of mercy, and when the whole fabric of outward grace manifested in the saints lies in ruins this is the fundamental basis of love which is never moved, and upon it the Lord proceeds to build again a new structure of grace. Covenant mercy is sure as the throne of God.
And repented according to the multitude of his mercies. He did not carry out the destruction which he had commenced. Speaking after the manner of men he changed his mind, and did not leave them to their enemies to be utterly cut off, because he saw that his covenant would in such a case have been broken. The Lord is so full of grace that he has not only mercy but mercies, yea a multitude of them, and these hive in the covenant and treasure up good for the erring sons of men.