A.T. Robertson Commentary Jude 1:18

"That they said to you, In the last time there shall be mockers, walking after their own ungodly lusts." — Jude 1:18 (ASV)

How that (οτ). Declarative οτ as in verse 5. See discussion of 2 Peter 3:3 for differences, no εν εμπαιγμονη here and no των ασεβειων there.