Theodoret of Cyrus, on Heb 13:9

“Be not led away with various and strange doctrines. For it is best that the heart be established with grace, not with meats; which have not profited those that walk in them.”

“By "strange teachings" he referred to what was at variance with the evangelical teachings. So he bids them persevere in the teaching of grace and abandon the observances of the law: No one reaped any benefit from them.”

Imported from an open dataset — not yet checked against the printed edition.