Tradition
St. Jerome
Against the Pelagians
Book II › Section 19
19. None of you does the law.
viii. 3. None of the accusers of the woman taken in adultery were without sin. Christ wrote their names in the earth.
x. 8. All who came before Christ were robbers.
xvii. 12. I kept them— they did not keep themselves.
Acts xv. 39. Paul and Barnabas quarrelled.
xvi. 6, 7. They were forbidden to preach where they chose.
Source: Against the Pelagians (New Advent)