Arcana Coelestia＃3721
3721. 'And this is the gate of heavens means that which serves as the ultimate degree of order, through which there is, so to speak, a way in from the natural creation. This is clear from the meaning of 'the gate' as that through which exit or entrance is made. The reason why here that which serves as the ultimate degree of order is meant is that the subject is the natural, which 'Jacob' represents. What 'a gate' means is clear from what has been stated and shown in 2851, 3187, and the fact that the natural is the ultimate degree of order from what has been introduced in 775, 2181, 2987-3002, 3020, 3147, 3167, 3483, 3489, 3513, 3570, 3576, 3671. The reason why through that ultimate degree there is so to speak a way in from the natural creation is that man's natural mind is the place through which things of heaven, that is, which are the Lord's, flow in and come down into the natural creation; and through that same mind the things that belong to the natural creation go back up, see 3702. The fact that there is so to speak an entrance from the natural creation through the natural mind into interior parts may be seen from what has been stated and shown in various places before.
[2] It seems to man as though worldly objects enter in through his physical or external senses and affect interior things, and so that there is an entrance from the ultimate degree of order into things that are within. But this is an appearance and illusion, as is evident from the general rule that what is secondary cannot flow into what is primary, or what amounts to the same, what is lower cannot flow into what is higher, or what is also the same, what is exterior into what is interior, or what is still the same, things of the world and the natural creation into those of heaven and of the spirit. For the former are grosser, the latter purer, and the grosser things that belong to the external or natural man come into being and are kept in being from those belonging to the internal or rational man. Those grosser things are unable to have any effect on the purer things but are affected by them. The nature of this influx however, seeing that appearance and illusion itself convince people that the reverse is true, will in the Lord's Divine mercy be discussed separately, where influx is the subject. This then is why it is said that through the ultimate degree of order there is, so to speak, a way in from the natural creation.
Ezekiel 46:1-9
1
Thus says the Lord Yahweh: The gate of the inner court that looks toward the east shall be shut the six working days; but on the Sabbath day it shall be opened, and on the day of the new moon it shall be opened.
2
The prince shall enter by the way of the porch of the gate outside, and shall stand by the post of the gate; and the priests shall prepare his burnt offering and his peace offerings, and he shall worship at the threshold of the gate: then he shall go forth; but the gate shall not be shut until the evening.
3
The people of the land shall worship at the door of that gate before Yahweh on the Sabbaths and on the new moons.
4
The burnt offering that the prince shall offer to Yahweh shall be on the Sabbath day six lambs without blemish and a ram without blemish;
5
and the meal offering shall be an ephah for the ram, and the meal offering for the lambs as he is able to give, and a hin of oil to an ephah.
6
On the day of the new moon it shall be a young bull without blemish, and six lambs, and a ram; they shall be without blemish:
7
and he shall prepare a meal offering, an ephah for the bull, and an ephah for the ram, and for the lambs according as he is able, and a hin of oil to an ephah.
8
When the prince shall enter, he shall go in by the way of the porch of the gate, and he shall go forth by its way.
9
But when the people of the land shall come before Yahweh in the appointed feasts, he who enters by the way of the north gate to worship shall go forth by the way of the south gate; and he who enters by the way of the south gate shall go forth by the way of the north gate: he shall not return by the way of the gate by which he came in, but shall go forth straight before him.
