In Exodus 30:12, this signifies all things of the church. (Arcana Coelestia 10216)

796. Because the Most Ancient Church conducted holy worship on mountains, the Ancient Churches therefore did so as well. Consequently with all the representative Churches of that time, and indeed with 'the nations' too, sacrifices were offered on mountains, and high places were built. This is clear from what is said about Abram in Genesis 12:8; 22:2; about the Jews before the Temple was built, in Deuteronomy 27:4-7; Joshua 8:30; 1 Samuel 9:12-14, 19; 10:5; 1 Kings 3:2-4; about the nations, in Deuteronomy 12:2; 2 Kings 17:9-11; about the Jews, who were idolaters, in Isaiah 57:7; 1 Kings 11:7; 14:23; 22:43; 2 Kings 12:3; 14:4; 15:3-4, 34-35; 16:4; 17:9-11; 21:3, 23:5, 8, 9, 13, 15.