2883. To acquire a heavenly proprium therefore man needs to do good from himself and to think truth from himself. But still he needs to know, and when he has been reformed, to think and believe, that everything good and everything true comes from the Lord, even the least trace of all, and to think and believe this because it is so. Yet a person is allowed to suppose that he acts from himself in order that good and truth may become as if they were his own.