'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.

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

2042. 'And it will be a sign of the covenant between Me and you' means that which is a representative and a meaningful sign of purity. This is clear from what has been shown just above in 2039, to the effect that circumcision was no more than a representative of purification from filthy loves. And because it was merely an external religious ceremony that represented and meant what was internal it was not the covenant but a sign of the covenant.