Matthew has τριβολῶν, thistles. The word occurs only once outside of Luke's writings, in Mar 12:26, where it is used as the familiar title of a section of the Pentateuch. Luke also uses it in the same way (Luk 20:37). He was doubtless acquainted with it medicinally, as it was extensively used by ancient physicians. Galen has a chapter on its medicinal uses, and the medical writings abound in prescriptions of which it is an ingredient. Galen also has a saying similar to our Lord's: “A farmer could never make a bramble bear grapes.” It is the word employed by the Septuagint for the bush out of which God spoke to Moses.