What is God's purpose in existing?

"I am that I am."  God's words to Moses at the burning bush.

Our purpose is to know and be like God.  We exist to be intimately connected to God. But why does God Himself exist?  What is God's purpose?

The creature finds it's purpose in the Creator, living for Him to serve Him as He made it to do. But the Creator is infinitely and eternally pleased with Himself, to be Himself, to exist in relation to Himself forever.  The Father is eternally satisfied with the Son, and the Son with the Father.  The Father is eternally enamored with His Spirit, and the Spirit with the Father.  The Son infinitely Loves God's Spirit, and The Spirit forever returns this love.  

Think of three perfectly attractive, powerful, intelligent, and creative personalities eternally connected to each other.  Imagine perfect passion, fun, music, art, industry, technology, intimacy and ecstasy.  We can't imagine such an existence because we are not God.  Yet God has eternal satisfaction in Himself.

And He has created us to join in His satisfaction.  Being made in His image, according to His likeness, we can share in His eternal goodness, loving Him supremely, loving each other impartially.

Glory to God.

Amen.