670. That 'living creature' ¹ means things of the understanding, and 'all flesh' those of the will, becomes clear from what has been stated already, and also from what follows. In the Word 'living creature' means all animal life in general, as in Genesis 1:10, 21, 24; 2:19. Here however, because the phrase 'all flesh' is added immediately after, it means things which belong to the understanding, for the reason given already, that the regeneration of the member of this Church had to begin in the things of the understanding. This also is why in the next verse 'birds' are mentioned first, which mean things of the understanding or the rational, and 'beasts', which are those of the will, second. 'Flesh' in particular means bodily-mindedness which is a feature of the will.

Footnotes:

7957. 'Both you and the children of Israel' means together with their truth from God, and with truth that leads to good and truth which springs from good. This is clear from the representation of 'Moses' as the truth from God, dealt with just above in 7955; and from the representation of 'the children of Israel' as those belonging to the spiritual Church, dealt with often, thus those guided by truth that leads to good and by truth which springs from good. For the spiritual Church differs from the celestial Church in that it is brought to the good of charity by means of the truth of faith, which being so it considers truth to be the essential thing. Initial contact with that good for them is effected through truth, for truth teaches them what they ought to do; and when they do that truth it is called good. This good, once they have been brought in contact with it, becomes the standpoint from which they see truths, that show them further how to act. From this it is evident that whether you say those belonging to the spiritual Church or those guided by truth through Which good is done, and by truth seen from the standpoint of good, it amounts to the same thing.