Charles H. Spurgeon on Psalms 146:5

The God of Jacob. A famous and significant description of God; and that, First, in respect of his nature, or the verity and reality of his being and excellence. He is styled here by way of elegancy or emphasis, "The God of Jacob", saith Mollerus, to discern and distinguish the true God of Israel from all Heathenish deities, and to explode all fictitious gods and all worships thereof. As the true God is the God of Jacob, so the God of Jacob is the true God. He is God alone, and there is no other besides him...Secondly. This title or appellation serves also to describe him in his special relation to his people. We find him called by our Psalmist, "The mighty God of Jacob": Ps 132:5. He is indeed the God of the whole earth, but in a peculiar manner "the God of Israel": Mt 15:31 ...It is observable in Scripture that he styles not himself so frequently, in his revelations of himself to them, "the God of heaven and earth" (though that also is a title full of encouragement), but "the God of Abraham, Isaac, and Jacob"; as if he had borne such choice goodwill, and had such a peculiar care for these three men, as to overlook all the world besides them. So near and intimate relation have God's people to him, that their interests are mutually involved, and twisted in a reciprocal and covenant bond. They are his, he is their portion; their Beloved is theirs and they are his: they are called by his name, the saints are styled his "holy ones", and the Church is termed expressly "Christ." Yea, he condescends to be called by their name; he assumes the name of Jacob, Ps 24:6: "This is the generation of them that seek him, that seek thy face, O Jacob:" —From "The Saints' Ebenezer", by F.E., 1667.