Charles H. Spurgeon on Psalms 115:3

But our God is in the heavens. When they place God in heaven, they do not confine him to a certain locality, nor set limits to his infinite essence; but on the contrary they deny the limitation of his power, its being shut up to human instrumentality only, or its being subject to fate or fortune. In short, they put the universe under his control; and teach us that, being superior to every obstruction, he does freely everything that may seem good to him. This truth is still more plainly asserted in the subsequent clause, he hath done whatsoever he hath pleased. God then may be said to dwell in heaven, as the world is subject to his will, and nothing can prevent his accomplishing his purposes. John Calvin.