Arcana Coelestia #4547
4547. And I will make there an altar to God. That this signifies the holy in which interior things are terminated, is evident from the signification of “making an altar to God,” as being the holy of worship (see n. 4541). It is said that interior things are terminated therein, because he was to make the altar in Bethel, which is here meant by “there,” and because by “Bethel” is signified the natural, in which interior things are terminated (see above, n. 4539).
Arcana Coelestia #4541
4541. And make there an altar unto God who appeared unto thee. That this signifies what is holy there, is evident from the signification of an “altar,” as being the principal representative of the Lord (see n. 921, 2777, 2811, 4489); and therefore “to make an altar to God” signifies what is holy of worship.