Ecce de quo Joannes dixit

Source: 
Praha (Prague), Strahovská knihovna (Library of the Royal Canonry of Premonstratensians at Strahov), DE I 7
Folio: 
021r
Sequence: 
26
Feast: 
Nativitas Domini
Office/Mass: 
C
Genre: 
A
Position: 
N
Cantus ID: 
00501
Mode: 
8
Differentia: 
G1
Differentia database: 
1--k-k-j-k-h-ghg--4 120a
Manuscript Reading Full Text (standardized spelling): 
Ecce de quo Joannes dixit Christus natus est in Israel et regni ejus non erit finis