Charles H. Spurgeon on Psalms 44:3

(last clause). The prophet does not suppose any worthiness in the person of Abraham, nor imagine any desert in his posterity, on account of which God dealt so bountifully with them; but ascribes the whole through the good pleasure of God...Nor does the psalmist here treat of the general benevolence of God, which extends to the whole human race: but he discourses of the difference which exists between the elect and the rest of the world, and the cause of this difference is here referred to the mere good pleasure of God. John Calvin.