Judgment. Gr. krisis (see on 2 Peter 2:4). Christ comes to pronounce judgment upon all men, some of whom will be saved and some lost (cf. on John 3:17; 5:22, 27).
To convince. See on John 8:46; 16:8.
All that are ungodly. Literally, “all the ungodly.” For comment on “ungodly” (asebeis) see on v. 4. The fourfold use of “ungodly” stresses the depraved nature of the teachers of v. 4 and points to the certainty of their punishment.
Hard speeches. Rather, “hard things.” Sinners have ever said hard things about God and Christ, by way of excuse for their own sinfulness and by way of detracting from the Lord’s wisdom and justice. In the final judgment such accusations will be answered and required.