For Jesus, the heart of God (who God is) is more important than the attributes of God (what God is).
Jesus accepts the Mosaic revelation of the name of God – Yahweh – which puts the emphasis on what God is. Yahweh is the causative form of the verb “to be” and is the first word in the complete expression of His name – Yahweh - ser-yihweh which means “He brings into being whatever comes into being.”
This remarkable revelation coincides with modern proofs of God as unique, Creator, and highest Being, but does not emphasize the heart of God. Building on this foundation, Jesus supplies the missing piece – the revelation of who God is -- by first revealing another name – Abba (Section I), and then revealing His unconditional love for us in the Parable of the Prodigal Son (Section II).
A brief explanation of each points to the heart God. Read more in the following document. Also, watch Fr. Spitzer discuss "Who is God" in the video at the bottom of the page.
Fr. Robert J. Spitzer, S.J., Ph.D. is a Catholic Priest in the Jesuit order (Society of Jesus) and is currently the President of the Magis Center and the Spitzer Center. He has made many TV appearances including: Larry King Live (debating Stephen Hawking and Leonard Mlodinow), the Today Show (debating on the topic of active euthanasia), The History Channel in “God and The Universe,” a multiple part PBS series “Closer to the Truth,” and the Hugh Hewitt Show. Currently appearing weekly on EWTN in “Father Spitzer’s Universe“.