The Belgic Confession, Article I (4)

God's oneness is that perfection of God whereby He is distinguished from all other being(s), so that no one and nothing is to be compared with Him. God does not belong to a certain class of beings, of which He is one among many. He is not God in competition with many others who also claim to be gods or who are acknowledged as gods. He is not even to be acknowledged as the god who is supreme among all gods. Scripture, and the Christian faith in obedience thereto, is absolutely intolerant. God is...