Who is the Christian God? What is the Trinity? Is the Trinity in the Bible?
Watch the next video: "Jesus is God. 33 Bible verses that prove it." https://www.youtube.com/watch?v=OldNsQLiFBs

God has revealed Himself in Scripture—as one God eternally existing in three Persons.
Jonathan Edwards noted, after studying the topic, "I think [the doctrine of the Trinity] to be the highest and deepest of all Divine mysteries"

The Christian doctrine of the Trinity holds that God is one God, but three coeternal consubstantial persons or hypostases—the Father, the Son (Jesus Christ), and the Holy Spirit—as "one God in three Divine Persons". The three persons are distinct, yet are one "substance, essence or nature" (homoousios). In this context, a "nature" is what one is, whereas a "person" is who one is.

This video uses an analogy by C.S. Lewis in "Mere Christianity"
Part two deals with problem analogies and the historical background of the doctrine.
https://www.youtube.com/watch?v=mvj87QCF0lg

For further study, see James R. White, The Forgotten Trinity (Minneapolis: Bethany House, 2001).

or use these online links:
http://bible.org/article/trinity-triunity-god

An Unpublished Essay on the Trinity by Jonathan Edwards
http://www.ccel.org/ccel/edwards/trinity/files/trinity.html

Deuteronomy 6:4
"Hear, O Israel: The LORD our God, the LORD is one."

Matthew 28:19
"Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit."