Titus 1:14

‘Not giving heed to Jewish fables, and commandments of men who turn away from the truth.’

Thus they are to give no heed to Jewish fables, often, but not necessarily, drawn around genealogies (compare 1Ti 1:4 ; 1 Timothy 4:7; 1 Timothy 6:20). He may partly have had Philo and his adherents in mind with their metaphorical use of Scripture which avoided the plain meaning. But the Rabbis too were prone to speculation. There were many Jews, and no doubt Jewish Christians, in Crete, who would be an especial target for such false teachers. Nor are they to heed the commandments of men who turn away from the truth by demanding response to Jewish and other ordinances which were now superseded.