How the Imputation of Christ's Righteousness Works

In this video, I refute the idea that the Protestant view of imputation creates a legal fiction. I explain what the historic doctrine actually was. To be "justified" is to be legally "in the right", and it happens by our sharing the status of Christ through union with Christ by faith. I also misspoke in the video I was thinking about--I actually was thinking of this video from catholic answers: https://www.youtube.com/watch?v=79SQHjKFV7M Briefly, he argues that if justification is accomplished by the imputed righteousness of Christ, then justification would be a one time event. But justification is not a one time event. Therefore, justification is not accomplished by the imputed righteousness of Christ. But as I've explained before, justification *is* ongoing on the Protestant view in the following way: God ongoingly regards me as sharing in Jesus's status through a faith-forged union with Christ that works the fruit of love and repentance. By metaphysically engrafting us into Christ, we share his benefits as those who have been made one in Spirit with him. In the future, I will address "future justification" and how it coheres with the imputation of Christ's righteousness.