What does “peace on earth” mean in Luke 2:14?

Glory, &c.--brief but transporting hymn--not only in articulate human speech, for our benefit, but in tunable measure, in the form of a Hebrew parallelism of two complete clauses, and a third one only amplifying the second, and so without a connecting "and." The "glory to God," which the new-born "Saviour" was to bring, is the first note of this sublime hymn: to this answers, in the second clause…

…The angels' doxology to God, and congratulations of men, upon this solemn occasion, Luk 2:13, Luk 2:14. The message was no sooner delivered by one angel (that was sufficient to go express) than suddenly there was with that angel a multitude of the heavenly hosts; sufficient, we may be sure, to make a chorus, that were heard by the shepherds, praising God; and certainly their song was not like that (Rev 14:3) which no man could learn, for it was designed that we should all learn it. 1.…

Glory to God in the highest,.... Which with the following words, are not to be considered as a wish, that so it might be, but as an affirmation, that so it was; for the glory of God is great in the salvation, peace, and reconciliation of his people by Jesus Christ, even the glory of all his perfections; of his wisdom and prudence in forming such a scheme; of his love, grace, and, mercy, the glory of which is his main view, and is hereby answered; and of his holiness, which is hereby honoured; and of his justice…