Giving of Life: Communion, Scivias, book z, vision 6: Two pictures at the opening of this chapter show a crowned woman (Ecciesia) receiving the blood of the Eucharist from Christ on the cross, and (reproduced here) a priest saying Mass at an altar with a great light (drawn as angels) coming down at the moment of transubstantiation when "the offering is made true flesh and blood." The members of the congregation vary in readiness, but all will be received if they repent.

From Voice of the living light: Hildegard of Bingen and her world by Barbara Newman