That ye faint not (mh enkakein). Object infinitive with mh after aitoumai. The infinitive (present active) enkakein is a late and rare word (see already Luke 18:1 ; 2 Thessalonians 3:13 ; 2 Corinthians 4:12 Corinthians 4:16 ; Galatians 6:9 ) and means to behave badly in, to give in to evil (en, kako). Paul urges all his apostolic authority to keep the readers from giving in to evil because of his tribulations for them. Your glory (doxa umwn). As they could see.