Jamieson, Fausset & Brown

murmurings--secret murmurings and complaints against your fellow men arising from selfishness: opposed to the example of Jesus just mentioned (compare the use of the word, Joh 7:12-13; Act 6:1; Pe1 4:9; Jde 1:16). disputings--The Greek is translated "doubting" in Ti1 2:8. But here referring to profitless "disputings" with our fellow men, in relation to whom we are called on to be "blameless and harmless" (Phi 2:15): so the Greek is translated, Mar 9:33-34. These disputings flow from "vain glory" reprobated (Phi 2:3); and abounded among the Aristotelian philosophers in Macedon, where Philippi was.