▁man ▁and ▁wife ." ▁Such ▁marriage ▁was ▁confirmed ▁by ▁the ▁Sav iour ▁in ▁the ▁G ospel ▁of ▁Matthew ▁( Mat ▁ 1 9 : 9 ) ▁and ▁by ▁His ▁presence ▁at ▁the ▁wed ding ▁in ▁C ana ▁( John ▁ 2 : 2 ). ▁In ▁the ▁Church — the ▁City ▁of ▁God — mar riage ▁is ▁a ▁sacr ament ▁and ▁may ▁not ▁and ▁cannot ▁be ▁dissol ved ▁as ▁long ▁as ▁the ▁sp ouses ▁live : ▁" But ▁a ▁marriage ▁once ▁for ▁all ▁entered ▁upon ▁in ▁the ▁City ▁of ▁our ▁God , ▁where , ▁even ▁from ▁the ▁first ▁union ▁of ▁the ▁two , ▁the ▁man ▁and ▁the ▁woman , ▁marriage ▁be ars ▁a ▁certain ▁sacr amental ▁character , ▁can ▁in ▁no ▁way ▁be ▁dissol ved ▁but ▁by ▁the ▁death ▁of ▁one ▁of ▁them ." ▁In ▁chapter ▁ 7 , ▁August ine ▁pointed ▁out ▁that ▁the ▁Roman ▁Empire ▁for bad ▁pol yg amy , ▁even ▁if ▁the ▁reason ▁of ▁fert ility ▁would ▁support ▁it : ▁" For ▁it ▁is ▁in ▁a ▁man ' s ▁power ▁to ▁put ▁away ▁a ▁wife ▁that ▁is ▁bar ren , ▁and ▁marry ▁one ▁of ▁whom ▁to ▁have ▁children . ▁And ▁yet ▁it ▁is ▁not ▁allowed ; ▁and ▁now ▁indeed ▁in ▁our ▁times , ▁and ▁after ▁the ▁usage ▁of ▁Rome ▁( nost ris ▁qu ide m ▁i am ▁tempor ibus ▁ac ▁more ▁Rom ano ), ▁neither ▁to ▁marry ▁in ▁addition , ▁so ▁as ▁to ▁have ▁more ▁than ▁one ▁wife ▁living ." ▁Further ▁on ▁he ▁not ices ▁that ▁the ▁Church ' s