God revealed Himself to man 2,000 years ago. As 1 Timothy 3:16 puts it, And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
Despite all the evidence that was shown, despite all the good works, all the miracles that were done, the Jewish still refused to believe Jesus Christ as whom He claimed to be, even so that they would dare cast stones at Him on multiple occasions (John 8:57-59; John 10:29-33). For even the Jews understood what Jesus was claiming:
John 8:57-59 says, "Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham? Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am. Then took they up stones to cast at him: but Jesus hid himself, and went out of the temple, going through the midst of them, and so passed by."
John 10:29-33 says, "My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father's hand. I and my Father are one. Then the Jews took up stones again to stone him. Jesus answered them, Many good works have I shewed you from my Father; for which of those works do ye stone me? The Jews answered him, saying, For a good work we stone thee not; but for blasphemy; and because that thou, being a man, makest thyself God."
Who did Jesus Christ claim to be? Some think He was nothing more than some average Joe. Muslims believe He is nothing more than a mere prophet. The Jehovah's Witnesses claim Jesus is Michael the Archangel!
What kind of average Joe, what kind of prophet, what kind of man can heal the palsy (Mark 2:1-5), and the blind (John 9:1-11)? What kind of man do even the devils fear (Matthew 8:28-32)? What kind of man, with the shout of a voice, can raise the dead back to life (John 11:43-46)?
Who other than the Creator (Colossians 1:13-17; John 1:1-4, 14), the Alpha and the Omega (Revelation 1:8), the Prince of Peace (Isaiah 9:6)! Who other than Jesus Christ, the image of the living God (2 Corinthians 4:4)!
Jesus is not the Father, as shown in Hebrews 1:8, where the Father calls His Son, Jesus Christ of Nazareth, God; however, the Father, Son, and Holy Spirit are united as ONE God. This is what is meant when Jesus said in John 10:30, "I and the Father are one." One what? One God. This could be better illustrated by using a married couple as an example. The husband and wife are united as one couple, twain together as one flesh. Likewise, God is One.
"He was in the world, and the world was made by him, and the world knew him not." -- John 1:10