1250. That "a mountain of the east" signifies charity, and in fact charity from the Lord, is evident from the signification of a "mountain" in the Word, as being love to the Lord and charity toward the neighbor, as has been shown before (n. 795). And that "the east" signifies the Lord, and things celestial from Him, which are of love and charity, may be seen above (n. 101), as well as from the following passages. In Ezekiel:
The cherubim lifted up their wings, and the glory of Jehovah went up from the midst of the city, and stood upon the mountain which is on the east of the city (Ezek. 11:22-23).
Here "the mountain which is on the east" signifies nothing else than what is celestial, which is of love and charity, and which is of the Lord, for it is said that "the glory of Jehovah stood" thereon. Again:
He brought me to the gate, even the gate that looketh to the way of the east; and behold the glory of the God of Israel came from the way of the east (Ezek. 43:1-2),
where "the east" has a like signification.
He brought me back by the way of the outer gate of the sanctuary which looketh toward the east, and it was shut. And Jehovah said unto me, This gate shall be shut, it shall not be opened, neither shall any man enter in by it, but Jehovah the God of Israel shall enter in by it (Ezek. 44:1-2).
Here likewise "the east" denotes what is celestial, which is of love, which is of the Lord alone. And again:
When the prince shall make a freewill offering, a burnt-offering, and peace-offerings, a freewill offering unto Jehovah, one shall open for Him the gate that looketh toward the east, and he shall make his burnt-offering and his peace-offerings, as he shall do on the Sabbath day (Ezek. 46:12),
in like manner denoting what is celestial, which is of love to the Lord.
 And in another place:
He brought me back unto the door of the house, and behold waters issued out from under the threshold of the house eastward, for the face of the house was toward the east (Ezek. 47:1, 8),
speaking of the New Jerusalem "the east" denotes the Lord, and thus the celestial, which is of love; "waters" are things spiritual. The same is signified in the passage before us by "a mountain of the east." Moreover they who dwelt in Syria were called "sons of the east," concerning which, of the Lord's Divine mercy hereafter.