God is the Creator and Ruler of the universe. He has eternally existed in three persons: the Father, the Son and the Holy Spirit. These three are co-equal and are one God.

Scriptures for reference: Genesis 1:1, 26-27; 3:22; 
Psalm 90:2; Matthew 28:19; 1 Peter 1:2; 2 Corinthians 13:14