Isti sunt qui venerunt ex

Source: 
Praha (Prague), Strahovská knihovna (Library of the Royal Canonry of Premonstratensians at Strahov), DE I 7
Folio: 
031r
Sequence: 
2
Feast: 
Nat. Innocentium
Office/Mass: 
M
Genre: 
V
Position: 
01
Cantus ID: 
006266b
Mode: 
1
Manuscript Reading Full Text (standardized spelling): 
Isti sunt qui venerunt ex magna tribulatione et laverunt stolas suas in sanguine agni