Salmos 40
Didymus the Blind · Comentário Patrístico (catena)
Salmos 40:7
He calls the "roll of the book" every divinely inspired Scripture, both the legal and the prophetic. In these Scriptures things are written concerning the memory of the Savior among us. The psalmist calls it a roll because everything is summed up into one. — FRAGMENTS ON THE PSALMS 40:8