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Union with Christ is the ground of both justification and sanctification, and Christ is the meritorious cause of both. Just as sanctification does not cause justification, so justification does not cause sanctification, understood in terms of the order of salvation. Sanctification would be utterly impossible, apart from having been justified. But that does not mean that justification, as an applied benefit, can cause another applied benefit. Rather, the peace that we have with God because of our justification enables us to live out the sanctified life as a child of God.