{The Lord of peace himself} (autos ho kurios t(8873) eir(886e)(8873)).
See  1Th 5:23  for {the God of peace himself}. {Give you peace}
(doi(8820)humin t(886e) eir(886e)(886e)). Second aorist active optative
(_Koin(825f)) of did(936d)i, not d(9388)i (subjunctive). So also  Ro
15:5  2Ti 1:16,18 . The Lord Jesus whose characteristic is peace,
can alone give real peace to the heart and to the world. ( Joh
14:27 ).