There is only one God, the Father, Creator of all...
Genesis 1:1
In the beginning God created the heaven and the earth.
Deuteronomy 6:4
Hear, O Israel: the LORD our God is one LORD.
Isaiah 43:10
Ye are my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me.
Ephesians 4:6
One God and Father of all, who is above all, and through all, and in you all.
For an expanded treatment of this fundamental idea go to There is one God [expanded]