Faith is not faith for us until it becomes spiritual, and it does not become spiritual unless it becomes a matter of love. It becomes a matter of love when we love to live out what is true and good–that is, to live by what we are commanded in the Word.
Faith consists of being moved by what is true because we want to do what is true simply because it is true; and wanting to do what is true simply because it is true is our actual spiritual nature. That is, it is detached from our earthly nature, which is willing to do what is true not because it is true but for the sake of praise or fame or profit for ourselves. Truth detached from such concerns is spiritual because it comes from the Divine. Whatever comes from the Divine is spiritual, and this is united to us through love because love is spiritual union.
We can know and think and understand a great deal, but when we are left to the privacy of our own thoughts we discard anything that is not in harmony with our love. This means also that we discard such things after our physical lives, when we are in the spirit, since the only things that are left to us once we are in the spirit are the things that have entered into our love. After death all the rest strikes us as foreign matter that we throw out of the house because it is not part of our love. I have said “in the spirit” because we live as spirits after death.
from Regeneration, Page 17