Mistagogiya, sostavlennaya protoiereem Andreem Udovenko, predstavlyaet soboy knigu, opisyvayushchuyu sleduyushchuyu posle katekhizatsii stupen' khristianskogo posvyashcheniya, vvodyashchuyu v tainstvennuyu praktiku khristianskoy Tserkvi. Opisanie i istolkovanie chinoposledovaniy kreshcheniya, miropomazaniya, prichashcheniya, ispovedi, soborovaniya, venchaniya i rukopolozheniya rassmatrivayutsya avtorom iskhodya iz pastyrskikh potrebnostey, a takzhe s uchetom istoricheskikh dannykh. Kniga presleduet, prezhde vsego, prosvetitel'skie tseli. Ne pretenduya na akademicheskuyu polnotu, Mistagogiya otlichaetsya shirotoy okhvata zatragivaemykh tem. Uchteny osobennosti chinoposledovaniya tainstv ne tol'ko razlichnykh Tserkvey vizantiyskogo obryada, no takzhe i latinskogo i inykh traditsionnykh obryadov khristianskogo Vostoka. V knige chitatel' naydet svedeniya po istorii religii i Tserkvi, liturgike, bogosloviyu i drugim otraslyam khristianskogo ucheniya.