John the Apostle
Revelation 20:6ESV·traditional attribution

Blessed and holy is the one who shares in the first resurrection! Over such the second death has no power, but they will be priests of God and of Christ, and they will reign with him for a thousand years.

Matthew Henry Presbyterian @wholebiblehenry

We have here, I. A prophecy of the binding of Satan for a certain term of time, in which he should have much less power and the church much more peace than before. The power of Satan was broken in part by the setting up of the gospel kingdom in the world; it was further reduced by the empire's becoming Christian; it was yet further...

Commenting on Revelation 20:1-10

John Gill Reformed Baptist @doctorgill

Blessed and holy is he that hath part in the first resurrection,.... This may be considered either as descriptive of the persons that shall partake of this privilege; as that they are only such who are blessed with spiritual blessings, with a justifying righteousness, with pardon of sin, and regenerating grace, and who are sanctified by the Spirit of God; these, and these only, will...

Albert Barnes Presbyterian @notesbybarnes

Verse 6. Blessed. That is, his condition is to be regarded as a happy or a favoured one. This is designed apparently to support and encourage those who in the time of John suffered persecution, or who might suffer persecution afterwards. And holy. That is, no one will be thus honoured who has not an established character for holiness.