If It’s Faith that Causes You to be United to Christ, then it’s Faith that Causes Your Sins to be Imputed to Christ
Romans 5:11 “We rejoice in God through our Lord Jesus Christ, through whom we have now received the atonement.”
Romans 8:10–“But if Christ is IN YOU, although the body is dead because of sin, the Spirit is life BECAUSE OF RIGHTEOUSNESS.
Galatians 4:5-6 –“to redeem those who were under the law, so that we would receive adoption as sons. And because you are sons, God has sent the Spirit of his Son into our hearts, crying, “Abba! Father!”
Imprecise “union” talk can be very dangerous. SOME theologians (Kevin Dixon Kennedy, Torrance) are using the concept of “union” to say that the atonement which really matters is the application of Christ’s death. Therefore, no double jeopardy, they say, unless somebody for whom Christ died has been “united to Christ.” In other words, SOME OF THEM TEACH THAT CHRIST DIED ALSO FOR THOSE WHO WILL PERISH.
It’s one thing to say that Christ’s death will be effective, and another to say WHY Christ’s death must be effective. Christ’s death saves not only because of God’s sovereign will but also because of God’s justice.
Although John Owen taught that God only imputed the sins of the elect to Christ, Owen did not teach that all the elect were justified as soon as Christ bore those sins. Owen taught with Romans 6 that the elect must come into legal union with Christ’s death. Until the elect are “placed into” that death, they remain under the wrath of God.
But SOME use “union” talk to change the meaning of the atonement and accuse the rest with thinking there is no need for faith. If the substitution for sins has already been made, they say, then all for whom it was made should logically already be justified. If the righteousness has already been obtained, then all for whom it was earned should logically already be justified by it. This is the claim made by SOME who use “union” to make the application of the atonement to be the atonement.
But it’s clear that Owen did not teach justification apart from faith. It’s also clear that Owen did not teach that faith was a mere recognition that we were already justified. (See Carl Trueman’s various books and essays on John Owen). “Unionists” should not ignore Owen’s careful distinction between the atonement and the legal application of the atonement. Some unionists do, some don’t
Some “unionists” locate the efficacy of the atonement not in Christ’s propitiation itself but only in the efficacy of regeneration and faith to unite people with that propitiation. This is their argument: “you can’t say that there’s double jeopardy until after a person has been married to Christ by faith. Then, and only then, they say, could you say that a person was dying for the same sins twice.”
But otherwise, it is claimed, you can teach everybody that “Christ is dead for you” without that meaning that Christ has died for your sins, because according to them, Christ’s death for sinners is not the same thing legally as Christ’s death to pay for the specific sins of sinners. So, again according to them, it’s the “union” which designates for whose sins Christ died.