JMNT(i)
16 These are, and continue to be, murmurers (or: those who speak privately and in a low voice, making a grumbling buzz of under-toned mutterings of critical and discontented comments), complainers (or: those who find fault with their lot; discontented ones), continuously passing from one place to another according to their strong desires (or: lusts; full passions), and their mouth continually uttering (or: speaking) over-swollen (hyper-weighty; pompous; boastful) things, continually admiring (or: wondering at) faces (= personal presences; = individuals; = personalities) for the sake and benefit of advantage and furtherance.
17 But you, dearly loved ones, remember the things spoken (the gush-effects; the results of the flow of what was said; the flowing declarations) by the sent-forth folks (representatives; emissaries) in regard to those things having been told beforehand of (or: foretold from and concerning) our Lord, Jesus Christ,
18 that they said to you, "Upon [other MSS: Within (or: During; In union with)] [the] last of the time folks will repeatedly be (or: there will constantly exist) mockers (those acting or playing in the manner of children; sporting, using childish gestures), continuously passing from one place to another according to (or: in correspondence with) their irreverent strong passions (or: their full desires and lusts of things not having the qualities of things approved by God)."