The Apostolic Tradition , attributed to the theologian Hippolytus , attests the singing of LOCATION@1 psalms with Alleluia as the refrain in early MISC@1 agape feasts .

The Apostolic Tradition , a book about MISC@1 traditions in early LOCATION@2 , says that MISC@2 sang `` Alleluia '' in early holy meals called `` agape feasts .
