8351. 'And the people grumbled against Moses' means grief caused by the bitterness of the temptation. This is clear from the meaning of 'grumbling' as complaint, the kind made in temptations, thus grief caused by the bitterness of the temptation. The temptations which those belonging to the Lord's spiritual Church underwent after they had been delivered from molestations, in addition to the temptations which members of that Church are destined to undergo, are described by the grumblings of the children of Israel in the wilderness. And since spiritual temptations are as a general rule protracted till a person is in despair, 1787, 2694, 5279, 5280, 7147, 7166, 8165, 'grumbling' means complaint because of grief felt in temptations, as in Exodus 16:2-3; 17:3; Numbers 14:27, 29, 36; 16:11. The words 'against Moses' are used because it was a grumbling against what was Divine; for 'Moses' represents Divine Truth, 6723, 6752, 6771, 6827, 7010, 7014, 7089, 7382.

[2] As regards the temptations which those belonging to the spiritual Church underwent, and the temptations which members of that Church are destined to undergo, it should be recognized that no faith, nor thus any charity, can ever be instilled into those who belong to the spiritual Church except by means of temptations. In temptations a person is involved in conflict against falsity and evil. These - falsity and evil - flow into the external man from the hells, while goodness and truth flow in from the Lord by way of the internal man; and so there arises from a conflict of the internal man with the external that which is called temptation. And in the measure that the external man is brought into a state of obedience to the internal, faith and charity are instilled; for the external or natural level of a person is a receptacle of truth and good from the internal. If the receptacle is not properly adjusted it does not receive anything flowing in from the more internal level but either repels, destroys, or stifles it, as a consequence of which there is no regeneration. So it is that temptation is necessary, in order that a person may undergo regeneration, which is effected through the instillation of faith and charity, and thereby through the formation of a new will and new understanding. This also explains why the term 'militant' is applied to the Lord's Church. See what has been stated and shown already about these matters in 3928, 4249, 4341, 4572, 5356, 6574, 6611, 6657, 7090 (end), 7122, 8159, 8168, 8179, 8273.

7009. 'And it will happen, that he will be for you as a mouth' means the truth contained in doctrinal teachings, which also goes forth from the Lord in an indirect way. This is clear from the representation of Aaron, who 'will be for Moses as a mouth', as doctrinal teachings, dealt with in 6998; and from the meaning of 'being for Moses as a mouth' as the utterance or declaration of it, dealt with in 6987. The reason why the words of explanation are 'the truth contained in doctrinal teachings, which also goes forth from the Lord in an indirect way' is that the truth contained in doctrinal teachings, which 'Aaron' represents, is the kind of truth that can be heard and discerned by angels and by men. Such truth is what goes forth in an indirect way from the Lord. But the kind of truth that is represented by 'Moses' goes forth directly from the Lord, and cannot be heard or discerned by men, nor even by angels, see 6982, 6985, 6996, 7004.