The Apostle Peter
1 Peter 4:5ESV·traditional attribution

but they will give account to him who is ready to judge the living and the dead.

Matthew Henry Presbyterian @wholebiblehenry

I. Here you have the visible change wrought in those who in the foregoing verse were represented as having been in the former part of their life very wicked. They no longer run on in the same courses, or with the same companions, as they used to do. Hereupon observe the conduct of their wicked acquaintance towards them. 1.

Commenting on 1 Peter 4:4-6

John Gill Reformed Baptist @doctorgill

Who shall give account to him,.... "To God himself", as the Syriac version reads; of all their blasphemies, and hard speeches spoken by them against God, Christ, the Gospel, and good men, and receive their just punishment. This the apostle says, to calm the minds of God's people, and make them to sit easy under all censures, reproaches, and calumnies, and not think of avenging...

Albert Barnes Presbyterian @notesbybarnes

Verse 5. Who shall give account. That is, they shall not do this with impunity. They are guilty in this of a great wrong, and they must answer for it to God. That is ready to judge. That is, "who is prepared to judge"-- τωετοιμωςεχοντι.