This is directly from Part II of the Workbook in A Course In Miracles.
Section 6. What is the Christ?
Christ is God’s Son as He created Him. He is the Self we share, uniting us with one another, and with God as well. He is the Thought which still abides within the Mind that is His Source. He has not left His holy home, nor lost the innocence in which He was created. He abides unchanged forever in the Mind of God.
Christ is the link that keeps you one with God, and guarantees that separation is no more than an illusion of despair, for hope forever will abide in Him. Your mind is part of His, and His of yours. He is the part in which God’s Answer lies; where all decisions are already made, and dreams are over. He remains untouched by anything the body’s eyes perceive. For though in Him His Father placed the means for your salvation, yet does He remain the Self Who, like His Father, knows no sin.
Home of the Holy Spirit, and at home in God alone, does Christ remain at peace within the Heaven of your holy mind. This is the only part of you that has reality in truth. The rest is dreams. Yet will these dreams be given unto Christ, to fade before His glory and reveal your holy Self, the Christ, to you at last.
The Holy Spirit reaches from the Christ in you to all your dreams, and bids them come to Him, to be translated into truth. He will exchange them for the final dream which God appointed as the end of dreams. For when forgiveness rests upon the world and peace has come to every Son of God, what could there be to keep things separate, for what remains to see except Christ’s face?
And how long will this holy face be seen, when it is but the symbol that the time for learning now is over, and the goal of the Atonement has been reached at last? So therefore let us seek to find Christ’s face and look on nothing else. As we behold His glory, will we know we have no need of learning or perception or of time, or anything except the holy Self, the Christ Whom God created as His Son.
Christ was not Jesus, though the Christ was in Jesus (Jeshua). As He is in us all. We are the One Christ, the One shared Creation of God. That idea takes time to get used to, but once you embrace it, your view of humanity and our shared Identity in Oneness, a peace beyond all words comes to your heart.