I know different people have different feelings about this, but I do street ministry work also. The point of street ministry isn’t to make people feel less than or to make assertions like the ones that man was making. Forgiveness of sins is an important component of Christianity. So is the way we’re called to treat our neighbors. When God calls us to be His hands and feet, that’s showing His love, grace, and mercy to everyone, the same way it’s been shown to us. I hope God reveals this man’s truth to him. Street ministry can be hard work, but it also sounds like this man has some heart-work he needs to do.