Remigius of Auxerre
Catena Aurea · Matthäusevangelium 5
Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men.
It should be known, that in the Old Testament no sacrifice was offered to God unless it were first sprinkled with salt, for none can present an acceptable sacrifice to God without the flavour of heavenly wisdom.