▁known ▁as ▁the ▁" Syn axis ▁of ▁the ▁Arch angel ▁Gabriel ", ▁and ▁celebr ates ▁all ▁the ▁appearances ▁and ▁m ira cles ▁attributed ▁to ▁Gabriel ▁throughout ▁history . ▁The ▁fe ast ▁was ▁first ▁established ▁on ▁Mount ▁Ath os ▁when , ▁in ▁the ▁ 9 th ▁century , ▁during ▁the ▁reign ▁of ▁Emperor ▁Bas il ▁II ▁and ▁the ▁Em press ▁Constant ina ▁P orph y ro gen it us ▁and ▁while ▁Nicholas ▁Ch ry so ver ges ▁was ▁Patri arch ▁of ▁Constantin ople , ▁the ▁Arch angel ▁appeared ▁in ▁a ▁cell ▁near ▁K ary es , ▁where ▁he ▁wrote ▁with ▁his ▁finger ▁on ▁a ▁stone ▁table t ▁the ▁h ymn ▁to ▁the ▁The ot ok os , ▁" It ▁is ▁truly ▁meet ... ". ▁ ▁The ▁Co ptic ▁Orth odox ▁Church ▁celebr ates ▁his ▁fe ast ▁on ▁ 1 3 ▁Pa oni , ▁ 2 2 ▁Ko iak ▁and ▁ 2 6 ▁Pa oni . ▁ ▁The ▁Eth iop ian ▁Church ▁celebr ates ▁his ▁fe ast ▁on ▁ 2 8 ▁December , ▁with ▁a ▁size able ▁number ▁of ▁its ▁bel ie vers ▁making ▁a ▁pil gr image ▁to ▁a ▁church ▁dedicated ▁to ▁" Saint ▁Gabriel " ▁in ▁K ul ub i ▁on ▁that ▁day . ▁ ▁Additionally , ▁Gabriel ▁is ▁the ▁patron ▁saint ▁of ▁mess engers , ▁those ▁who ▁work ▁for ▁broadcast ing ▁and ▁tele communic ations ▁such ▁as ▁radio ▁and ▁television , ▁postal ▁workers , ▁cler ics , ▁diplom ats , ▁and ▁stamp ▁collect ors . ▁ ▁L atter - day ▁Saint ▁teach