Arcana Coelestia # 2972
2972. 'And every tree which was in the field' means the interior cognitions of the Church. This is clear from the meaning of 'a tree' as perceptions when the celestial Church is the subject, dealt with in 103, 2163, but cognitions when the spiritual Church is the subject, dealt with in 2722 - interior cognitions here because the words 'every tree which was in the field' are used, followed by 'which was in all its borders round about', by which exterior cognitions are meant; and from the meaning of 'the field' as the Church, dealt with already. Mention is made of the tree in the field and in its borders round about for the sake of that internal sense; otherwise it would not have been worth any mention in the Word, which is Divine.
Arcana Coelestia # 2163
2163. 'Recline under the tree' means towards the perception of the state through which He was passing. This is clear from the meaning of 'a tree' as perception, dealt with in 103. The whole train of thought shows that this is the real meaning here. 'Trees' means perceptions, and the reason for this was that the celestial man was compared and likened to the paradise or garden in Eden, and therefore the perceptions of celestial things with that man to the trees that were there.