▁( now ▁L jub lj ana ), ▁and ▁at ▁the ▁College ▁of ▁Pro pag anda ▁in ▁Rome . ▁On ▁ 9 ▁March ▁ 1 8 4 5 ▁he ▁was ▁ord ained ▁a ▁priest , ▁and ▁a ▁year ▁later ▁graduated ▁as ▁a ▁doctor ▁of ▁the ology . ▁ ▁When ▁the ▁Vic ari ate ▁Apost ol ic ▁of ▁Sud an ▁was ▁established ▁on ▁ 3 ▁April ▁ 1 8 4 6 , ▁the ▁Cong reg ation ▁of ▁Pro pag anda ▁selected ▁Kno ble cher ▁as ▁one ▁of ▁the ▁mission aries ▁for ▁the ▁region . ▁Before ▁leaving ▁for ▁central ▁Africa ▁he ▁spent ▁eight ▁months ▁in ▁Leb anon ▁and ▁at ▁other ▁places ▁in ▁Sy ria ▁to ▁acquaint ▁himself ▁with ▁the ▁r ites ▁and ▁custom s ▁of ▁the ▁Oriental ▁Christians . ▁Tow ards ▁the ▁end ▁of ▁September , ▁ 1 8 4 7 , ▁he ▁left ▁C airo ▁in ▁company ▁of ▁Maxim ilian ▁R yl lo , ▁S . J ., ▁the ▁Pro - V ic ar ▁Apost ol ic ▁of ▁Central ▁Africa , ▁and ▁four ▁other ▁mission aries , ▁and ▁arrived ▁at ▁Kh art ou m ▁on ▁ 1 1 ▁February ▁ 1 8 4 8 . ▁Here ▁they ▁established ▁a ▁school ▁for ▁young ▁Afr icans ▁whom ▁they ▁had ▁purchased ▁in ▁the ▁slave - market ▁and ▁who ▁subsequently ▁assist ed ▁them ▁on ▁their ▁miss ions . ▁Through ▁them ▁Kno ble cher ▁became ▁acquaint ed ▁with ▁languages ▁spoken ▁in ▁the ▁interior ▁of ▁Africa , ▁and ▁was ▁soon ▁enabled ▁to ▁compile ▁a ▁sort ▁of ▁dictionary ▁of ▁these ▁languages .