Are there more Gods than one?

There is but one only, the living and true God.[1]

1. Deut. 6:4

   Hear, O Israel: The Lord our God, the Lord is one.

2. I Cor. 8:4,6

   Therefore, as to the eating of food offered to idols, we know that "an idol has no real existence," and that "there is no God but one." ....yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist.

3. Jer. 10:10

   But the Lord is the true God;
   he is the living God and the everlasting King.
   At his wrath the earth quakes,
   and the nations cannot endure his indignation.

Westminster Larger Catechism, Question 8. Scripture quoted from the ESV.