Arcana Coelestia#10508
10508. 'Behold, My angel will go before you' means that Divine Truth will still be the leader. This is clear from the meaning in the highest sense of 'the angel of Jehovah' as the Lord's Divine Human, and in the relative sense as that which is Divine and the Lord's among angels in the heavens, dealt with in 1925, 2821, 4085, 6831, 9303, so that it means Divine Truth, 8192; and from the meaning of 'going before you' as being the leader.
Arcana Coelestia#2821
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.