There is only one God. Sometimes the Bible will refer to the “other” gods as if they are real, but this is just a way of saying how great the Lord, the true God, is. This psalm, likely by King David, was written to show that the Lord is the one true God, the Lord of the whole earth, the King of all nations. That is the God we serve; that is the God who loves us; that is the God who came to earth and died for us. Wow.