Jud 1:5. Ὑπομνῆσαι, to remind) In an active sense.-εἰδότας ὑμᾶς, though you know) The Accusative Absolute, as Act 26:3. The reason why he only admonishes or reminds them is, because they already know it, and have ascertained it once for all. This expression answers to that of Peter, knowing this first.-ἅπαξ) once for all: Jud 1:3, note.-σώσας, having saved) There is an antithesis in, destroyed.