The Bible repeatedly emphasizes the legal aspects of justification. God does not make us righteous in that moment; God declares us righteous in that moment, just like a judge passes sentence on the defendant in his courtroom. Through the ministry of the Holy Spirit God will over time make us more and more righteous in the way we live. This process is called sanctification. But we do not grow in sanctification in order to be justified. We grow in sanctification because we are justified. The declarative act of justification is gracious soil out of which grace-filled lives will grow.
Jay Harvey