Arcana Coelestia # 8438
8438. 'Say to all the assembly of the children of Israel' means instruction. This is clear from the meaning of 'saying' - when done by God's truth addressing members of the Church regarding things to be carried out by Divine command - as instruction, as also in 7186, 7267, 7304, 7380, 7517, 8127; and from the meaning of 'the assembly of the children of Israel' as those who belong to the spiritual church, dealt with in 7843.
Arcana Coelestia # 7517
7517. 'And Jehovah said to Moses and to Aaron' means fresh instruction. This is clear from the meaning of 'Jehovah said' as instruction, as above in 7497. The instruction is fresh because a new state is dealt with now, the previous one having come to an end. Instruction given by Jehovah comes through the truth that emanates from Him; and truth that emanates from Jehovah is represented by 'Moses and Aaron', inward truth by 'Moses' and outward truth by 'Aaron', 7382.