435
A.D.
John Cassian
Patristic
c. A.D. 360–435
“You see then that fasting is certainly not considered by the Lord as a thing that is good in its own nature, because it becomes good and pleasing to God not by itself but by in conjunction with other works. Again, in light of surrounding circumstances it may be regarded as not merely vain but actually hateful, as the Lord says: "When they fast, I will not hear their prayers."”