1) a state of national tranquillity
    1a) exemption from the rage and havoc of war
 2) peace between individuals, i.e. harmony, concord
 3) security, safety, prosperity, felicity, (because peace and
    harmony make and keep things safe and prosperous)
 4) of the Messiah's peace
    4a) the way that leads to peace (salvation)
 5) of Christianity, the tranquil state of a soul assured of its
    salvation through Christ, and so fearing nothing from God and
    content with its earthly lot, of whatsoever sort that is
 6) the blessed state of devout and upright men after death