From eirene; to be (act) peaceful -- be at (have, live in) peace, live peaceably.
see GREEK eirene
1. to make peace: 1 Macc. 6:60; Dio Cassius, 77 12, etc.
2. to cultivate or keep peace, i. e. harmony; to be at peace, live in peace: 2 Corinthians 13:11; ἐν ἀλλήλοις, Mark 9:50; ἐν ἑαυτοῖς (T Tr αὐτοῖς), 1 Thessalonians 5:13; μετά τίνος, Romans 12:18; (Plato, Theact., p. 180 b. Dio Cassius, 42, 15, etc.; the Sept.).