The Answer is simple. Jesus was a man, but God had become manifest through him. Or rather He achieved christ consciousness, which is to overcome the ego and embrace everything around himself in compassion, generousity, and humility. He became one with God, and God one with him. "I and the Father are one." -Jesus in John 10:30-33. God is the source of all that exists, as He is the father. But God is not a single being, rather it is the ultimate reality of everything, without form, both "beginning" and "end", it is wholeness, it is connection between everyone and everything that exists. To be united with God, is to unite yourself with everything around you, "to make the outside like the inside", because all things created are from God and a part of Him, His essence, they are facets of His expression. These are the roots of the Divine nature:
[font=Arial, Geneva, Helvetica]"You have heard that it was said, 'You shall love your neighbor and hate your enemy.' 44 But I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you, 45 that you may be sons of your Father in heaven; for He makes His sun rise on the evil and on the good, and sends rain on the just and on the unjust. [/font][font=Arial, Geneva, Helvetica]-Jesus in Matthew 5:43-48 43 [/font]
Naturally, because people are not able to percieve this, they understood as Jesus himself was God. But God is within all of us (divine immanence), and becomes manifest at ego-death. To achieve such, is to become a son or daughter of God.
The ego (narcissism) is the source of all human downfall. The motive for all sin is selfishness/ego. (Satan is mythology and symbolically represents the ego). To become reborn again is to wash away the ego, to put others above your own self, and ultimately become a living sacrafice.
"The kingdom of heaven is spread out all over the earth, but people do not see it." -Jesus in the non-canonical Gospel of Thomas
It cannot be grasped by phsyical eyes, but only spiritual eyes can see it. It is about a connection to everyone and everthing, it is about wholeness. It is about embracing everything and everyone around you in compassion, instead of isolating yourself in selfishness. It is realizing the totality of existance, that we all come from the same source, and dissolve back to the same.
Jesus made an example. There are two different types of christians, those who worship Jesus, and those who emulate Jesus.
[font=Arial, Geneva, Helvetica]"These people draw near to Me with their mouth, And honor Me with their lips, But their heart is far from Me."[/font][font=Arial, Geneva, Helvetica] - Jesus in Mathew 15:8[/font]