Melody of the R/ from Solesmes 1957 with minor corrections from Gregofacsimil. Neumes from H. Gloria Patri synthetic. Melody of the V/ critically established from Vat 8737 , Arras 465 and FCo2. This is definitively a proper melody and not an error introduced when copying the typical 7th mode verse tone.
LRT corrections by dcrochu. DCrochu would like to standardize this verse but I maintain that the mss that have it all agree on the usual formula before the mediant (diviniTATEM).