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:

To fly, and go forth abroad, as in Genesis 39:12, signifies that separation was made, or that there was no longer anything common. To fly, when related to the Lord, also signifies omnipresence.

To fly from the face of any one, as in Genesis 16:6, signifies indignation.

To fly, and to fall, as in Genesis 14:10, signifies to be conquered.

To fly, as in Psalm 18:11, signifies to enlighten the middle heaven. To fly, when spoken of the Lord, signifies to foresee and to provide.

To fly, as a cloud, and as doves to their windows, as in Isaiah 60:7, 8, signifies inquiry and investigation into truth, from the literal sense of the Word.

To fly, in the midst of heaven, as in Revelation 8:13, signifies to instruct and foretell.

(References: Apocalypse Revealed 244; Revelation 12, 12:14, Revelation 14)