"In a sense you might even say it is God who does the pretending. The three-Personal God, so to speak, sees before Him in fact a self-centered, greedy, grumbling, rebellious human animal. But He says 'Let us pretend that this is not a mere creature, but our Son. It is like Christ in so far as it is a Man, for He became Man. Let us pretend that it is also like Him in Spirit. Let us treat it as if it were what in fact it is not. Let us pretend in order to make the pretence into a reality.' God looks at you as if you were a little Christ: Christ stands beside you to turn you into one. I daresay this idea of divine make-believe sounds rather strange at first. But, is it so strange really? Is not that how the higher thing always raises the lower? A mother teaches her baby to talk by talking to it as if it understood long before it really does." Mere Christianity
God's pretending--the Bible has a more theological word for it--justification. God justifies us--declares us to be something we are not. God declares us to be righteous in his sight based upon Jesus' perfect and Jesus' death on the cross for our sins.
Paul uses different images to describe the indescribable. He uses the image of the law court--justification. But a financial image is also involved--imputation. God imputes to our account the righteousness of Jesus. And God imputes to Jesus' account our sin--and Jesus pays the debt for those sins on the cross. It would be kind of like waking up one day and finding that all of my financial debts were paid by Bill Gates, and that Gates, on top of that, had shared all his wealth with me.
All of this "divine make-believe" paves the way for God to make us actually holy. Once the legal papers of justification are signed and sealed God is able to adopt us as his children. Then having adopted us he begins to re-make us in the image of our elder brother--Jesus. He teaches us how to live in his family by treating us as his children. This involves reproof, correction and training, but it also involves times of family celebration and fellowship meals, like the Lord's Supper. The whole process is called sanctification and that process will one day be complete when God glorifies us in the presence of Christ and all creation.
"For those God foreknew he also predestined to be conformed to the likeness of his Son, that he might be the firstborn among many brothers. And those he predestined, he also called; those he called, he also justified; those he justified, he also glorified." Romans 8:29
Comments