'The first resurrection,' mentioned in Revelation 20:5, 6, does not mean a first resurrection, but the essence and primary part of resurrection, which is salvation and eternal life. There is only one resurrection to life. A second does not happen, and is not mentioned anywhere in the Bible.

(References: Apocalypse Explained 6; Apocalypse Revealed 851; Revelation 20:5-6)

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.