 It can't have anything to do with it. But then, yes, you're right. Most all evangelical Christians will say that, look, if you've been justified, that is, if this has happened to you and you do belong to Christ, then you will want to obey because the Holy Spirit's in you. You've been regenerated now and you're going to want to obey. And obedience can be seen as the primary evidence that you have been justified.