The Creator-Creature Separation and Christ's Mediatorship

When Adam fell into sin, a separation occurred between him and his Creator: "Your iniquities have made a separation between you and your God, and your sins have hidden His face from you so that He does not hear" (Isaiah 59:2; see also Habakkuk 1:13). And since that time, every descendant of Adam (excluding Jesus) has experienced that separation. For the believer, a solution was provided: "For there is one God, and there is one mediator between God and men, the man Christ Jesus" (I Timothy 2:5, see also Galatians 3:20). By means of faith, Jesus reunites the redeemed sinner with His offended Heavenly Father: "Therefore He is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, since a death has occurred that redeems them from the transgressions committed under the first covenant" (Hebrews 9:15).

I mentioned "redeemed sinners" on purpose, because that mediatorship is not available to anyone who has not yet received Christ. Until a person has done so, he experiences God only as an offended Judge, separated still because of sin.

However, the Scriptures tell us that the unbeliever is not unaware of his situation. He knows that God exists, that he is accountable to Him, and that he has offended Him (Romans 1:18-22). The unbeliever knows, but suppresses the knowledge, that he faces only eternal judgment, without the help of a mediator, just like the criminal knows that he faces punishment for his crime if he is without a lawyer. "The least transgression contracts guilt, guilt calls for punishment, and this punishment consists in that banishment from God which is attended, in every dependent being, with spiritual death and the unbroken dominion of sin. To be a sinner once, therefore, is to be a sinner forever, unless some agency should be interposed to arrest the natural and ordinary course of justice and law. Hence the office of Mediator must be, not to make repentance efficacious of pardon, but to make repentance possible" (James Henley Thornwell, "The Necessity and Nature of Christianity").