The foundation of the Christian faith: The Holy Bible reveals that the Lord Jesus Christ is the eternal Son of God, who always existed with the Father and the Holy Spirit, and who by His incarnation took upon Himself the form of man to become the only God-Man to live on earth. In the one person of Christ, there are two natures, human and divine, each in its completeness and integrity. They are distinguishable but indivisible, so that He is fully man and fully God. It is this sinless union of the divine and human natures which qualifies Jesus Christ to be the only sacrificial mediator between God and man.