Selection from New Jerusalem Heavenly Doctrine ~ Emanuel Swedenborg
No one can know what faith is in its essence, unless he knows what charity is, because where there is no charity there is no faith, for charity makes one with faith as good does with truth. For what man loves or holds dear, this to him is good, and what man believes, this to him is truth; whence it is plain that there is a like union of charity and faith, as there is of good and truth....The union of charity and faith is also like that of the will and the understanding with man; for these are the two faculties which receive good and truth, the will receiving good and the understanding truth; thus, also, these two faculties receive charity and faith, since good is of charity and truth is of faith. Everyone knows that charity and faith are with man, and in him, and because they are with man, and in him, they must be in his will and understanding, for all the life of man is therein, and from thence. Man has also memory, but this is only the outer court, where those things are collected together which are to enter into the understanding and the will. Thence it is evident that there is a like union of charity and faith, as there is of the will and the understanding....
Charity conjoins itself with faith with man, when man wills that which he knows and perceives; to will is of charity, and to know and perceive is of faith. Faith enters into man, and becomes his, when he wills and loves that which he knows and perceives; meanwhile it is without him.
Faith does not become faith with man, unless it becomes spiritual, and it does not become spiritual, unless it becomes of the love; and it then becomes of the love, when man loves to live truth and good, that is, to live according to those things which are commanded in the Word.
(New Jerusalem Heavenly Doctrine 108-111)