In the beginning,
God created the heavens and the earth.
Genesis 1:1

There is only one God:
† He is eternal – He has always existed and He will always exist
† He created everything
† He knows everything
† He has perfect love and executes perfect justice
† He has sole authority to determine what is true and to determine right from wrong.
† Although there is only one God, He exists in 3 persons – The Father, The Son and The Holy Spirit

This is what others say about God: 

Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways! For from him and through him and to him are all things. To him be glory forever. Amen. Romans 11: 33, 36

And this is what God says about Himself in the Bible:

For my thoughts are not your thoughts, neither are your ways my ways, declares the LORD. For as the heavens are higher than the earth, so are my ways higher than your ways and my thoughts than your thoughts. Isaiah 55: 8 – 9

Have you not known? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; his understanding is unsearchable. Isaiah 40: 28