Arcana Coelestia # 2186
2186. And he stood before them under the tree. That this signifies the derivative perception, follows from the signification of a “tree,” as being perception (see n. 103, 2163). It has been already stated (verse 4), that the three men who came to Abraham lay down under a tree, by which was signified that the Divine approached the perception of that state in which the Lord then was. But it is here said that Abraham stood under the tree, by which is signified that the Lord approached Divine perception, after He had prepared Himself; and this is the reciprocality. Everyone can see that it is not without a cause, that mention is made of the three men and of Abraham standing under a tree, consequently that it was said for the sake of the arcana which lie hidden in these things.
Leviticus 6:9-10
9
"Command Aaron and his sons, saying, 'This is the law of the burnt offering: the burnt offering shall be on the hearth on the altar all night until the morning; and the fire of the altar shall be kept burning on it.
10
The priest shall put on his linen garment, and he shall put on his linen breeches upon his body; and he shall remove the ashes from where the fire has consumed the burnt offering on the altar, and he shall put them beside the altar.
