Arcana Coelestia # 10541
10541. 'And I shall know what I am to do to you' means that, this being so, it is possible for something to be established among them. This is clear from the train of thought in the internal sense; for outward holiness, devoid of any inward holiness, could exist with that nation. And since for this reason the external aspect of the Church could exist with that nation even though nothing of the internal did so, 'I shall know what I am to do' means that, this being so, it is possible for something to be established among them.
Ezekiel 45:17
17
It shall be the prince's part to give the burnt offerings, and the meal offerings, and the drink offerings, in the feasts, and on the new moons, and on the Sabbaths, in all the appointed feasts of the house of Israel: he shall prepare the sin offering, and the meal offering, and the burnt offering, and the peace offerings, to make atonement for the house of Israel.