I've come to see God as the Unity of the Father, the Son and the Spirit - three persons who are one. Jesus came to open our eyes to the truth of who we are; he came to liberate us from the illusion of the ego and the false self that would have us see ourselves as separate from God.
When God created man, God infused (or blew) his Spirit into man, developing the higher mind of man that hears the will (voice) of God; man, led by the will of God, was at one with God - man was part of God's oneness (described metaphorically as "in the garden" and "in the presence of the Lord God"). Man separated from this oneness when he chose to act contrary to God's will by pursuing the will and desires of this false self, an illusion of identity and ego that arose when the exterior perspective of the lower mind of man led (rather than followed) the interior perspective of the higher mind. The exterior perspective is active when the lower mind is receptive to the external senses - it was the allure of these exterior sensations that tempted man to erect this image and illusion of the false self to displace the true self whose interior perspective in the higher mind remains within God's oneness and will.
Jesus, the Christ, came so that we could see the truth of who we are..."children of the most high God." And, if children of the Father, then we share in the oneness that is the nature of the Father. And, as it was with the mind that man became separated from the oneness, it is by the mind that one is reconciled...with the higher mind (of) Christ.
Faith describes this process of entering into Christ, particularly, entering and transforming into the mind of Christ. For this faith is not a knowing of logical reasoning, but an interior hearing (and knowing with intuitive certainty) of the truth of who Jesus is and an interior hearing (and knowing) of the truth of who we are - we hear and respond to the truth and revelations Jesus brings...this is the faith in Jesus that moves and awakens us into union with him, and through Christ, the Son, we enter the oneness of God. This is the faith we acknowledge with the baptism that ceremoniously declares the eradication of the false self as we bury the illusion and then we are resurrected in the truth of Christ. We become children of the Father at one with the Son, in oneness with God and doers of his will.
Just as the Father, the Son and the Spirit are One God, we who are many are One in Christ.