In general, trees represent the deepest and most significant intellectual concepts: the ones that come to us most directly from the Lord. This varies depending on us and our states: the people of the Most Ancient Church, who were in a state of loving the Lord, understood truth automatically and internally through what the Writings call "perception"; people in lower states (including most of us) have to work a little harder to learn it from the Word and by willing to follow the Lord. In other parts of the Bible, especially in the prophets and New Testament parables, the meaning of "tree" is broader, meaning not just a person's intellectual concepts but the whole person.

'Trees,' as in Joel 1:10-12, signify knowledges.

2821. 'The angel of Jehovah called to him out of heaven' means comfort received at that time from the Divine itself. This becomes clear from the meaning of 'calling out of heaven' as giving comfort to, as is also evident from what comes immediately before and directly after; and from the meaning of 'the angel of Jehovah'. When angels are mentioned in the Word they mean something within the Lord, though exactly what belonging to Him is apparent from the whole train of thought, see 1925. Here 'the angel of Jehovah' is used to mean the Divine itself. Something similar is said regarding the Lord, when He endured the very severe temptation in Gethsemane,

There appeared to Him an angel from heaven, strengthening Him. Luke 22:43.

Here also 'an angel from heaven' is used in the internal sense to mean the Divine that was within Him.