Arcana Coelestia #4123
4123. A way of seven days. That this signifies the holy of truth, is evident from the signification of a “way,” as being truth (n. 627, 2333); and from the signification of “seven,” as being what is holy (n. 395, 433, 716, 881). Here the signification is that there was the ardor of conjunction, that is, of conjoining itself with the holy of truth.
Arcana Coelestia #881
881. That “seven” signifies what is holy, because charity is now treated of, is evident from the signification of “seven” (concerning which above, n. 395, 716. Moreover “seven” is inserted here for the coherence of all things historically, as “seven” and “seven days” in the natural sense add nothing but a certain holiness, which this second state has from the celestial, that is, from charity.