Psalm 136:2
"O give thanks unto the God of gods: for his mercy endureth for ever."
Cross References (ranked by relevance)
For the LORD your God is God of gods, and Lord of lords, a great God, a mighty, and a terrible, which regardeth not persons, nor taketh reward:
For thou, LORD, art high above all the earth: thou art exalted far above all gods.
And the house which I build is great: for great is our God above all gods.
The king answered unto Daniel, and said, Of a truth it is, that your God is a God of gods, and a Lord of kings, and a revealer of secrets, seeing thou couldest reveal this secret.
The LORD God of gods, the LORD God of gods, he knoweth, and Israel he shall know; if it be in rebellion, or if in transgression against the LORD, (save us not this day,)
Now I know that the LORD is greater than all gods: for in the thing wherein they dealt proudly he was above them.
Confounded be all they that serve graven images, that boast themselves of idols: worship him, all ye gods.
God standeth in the congregation of the mighty; he judgeth among the gods.