Isaiah said this because he saw Jesus' glory and spoke about him.

Jesus answered, "For a long time I have been with you all; yet you do not know me, Philip? Whoever has seen me has seen the Father. Why, then, do you say, 'Show us the Father'?

Do you not believe, Philip, that I am in the Father and the Father is in me? The words that I have spoken to you," Jesus said to his disciples, "do not come from me. The Father, who remains in me, does his own work.

They would not have been guilty of sin if I had not done among them the things that no one else ever did; as it is, they have seen what I did, and they hate both me and my Father.

The God who said, "Out of darkness the light shall shine!" is the same God who made his light shine in our hearts, to bring us the knowledge of God's glory shining in the face of Christ.

Christ is the visible likeness of the invisible God. He is the first-born Son, superior to all created things.

He reflects the brightness of God's glory and is the exact likeness of God's own being, sustaining the universe with his powerful word. After achieving forgiveness for the sins of all human beings, he sat down in heaven at the right side of God, the Supreme Power.

We know that the Son of God has come and has given us understanding, so that we know the true God. We live in union with the true God---in union with his Son Jesus Christ. This is the true God, and this is eternal life.