Task: Text Simplification
Input (English): the apostolic tradition , attributed to the theologian hippolytus , attests the singing of hallel psalms with alleluia as the refrain in early christian agape feasts.
Output (English): the singing of hallel psalms with alleluia is according to the apostolic tradition . it is done so to abstain from in early christian agape feast or love feast . this is attributed to the theologian hippolytus.