Arcana Coelestia # 7201
7201. 'Therefore say to the children of Israel' means that the law of God will enable those who belong to the Lord's spiritual kingdom to discern. This is clear from the representation of Moses, the one who is told to 'say to the children of Israel', as the law of God, dealt with in 6723, 6752; from the meaning of 'saying' as discerning, dealt with in 1791, 1815, 1819, 1822, 1898, 1919, 2080, 2506, 2515, 2619, as enabling to discern, since the command 'say' has reference to the law of God; and from the representation of 'the children of Israel' as those who belong to the Lord's spiritual kingdom, dealt with in 6426, 6677.
Malachi 4:4-6
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"Remember the law of Moses my servant, which I commanded to him in Horeb for all Israel, even statutes and ordinances.
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Behold, I will send you Elijah the prophet before the great and terrible day of Yahweh comes.
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He will turn the hearts of the fathers to the children, and the hearts of the children to their fathers, lest I come and strike the earth with a curse."