2665. All that Sarah saith unto thee, hearken unto her voice. That this signifies that He should act according to spiritual truth, is evident from the representation of Sarah, as being the Divine spiritual, or Divine truth (see n. 2622); and from the signification of "hearkening to the voice," as being to act according to it (see n. 2542). What it is to act according to spiritual truth cannot be unfolded to the apprehension in the fullness in which it can be perceived by those who are in the internal sense; and therefore if we were to state what it is according to their perception, it would scarcely be acknowledged; and there is the further reason that more arcana are first to be unfolded, nay, believed, before the matter when unfolded can enter into the ideas of men's belief. What it signifies in a general way can be told in some small degree, namely, that the Lord formed a conclusion from the Human Divine, and acted according to it, and thus from His own power: for Divine truth was that by means of which He united the Human to the Divine; and Divine good that by means of which He united the Divine to the Human; which unition was reciprocal (see n. 2004).