4 Maccabees 5:18

18 Even if, as you suppose, our law were not truly divine and we had wrongly held it to be divine, not even so would it be right for us to invalidate our reputation for piety.

4 Maccabees 5:18 In-Context

16 "We, O Antiochus, who have been persuaded to govern our lives by the divine law, think that there is no compulsion more powerful than our obedience to the law.
17 Therefore we consider that we should not transgress it in any respect.
18 Even if, as you suppose, our law were not truly divine and we had wrongly held it to be divine, not even so would it be right for us to invalidate our reputation for piety.
19 Therefore do not suppose that it would be a petty sin if we were to eat defiling food;
20 to transgress the law in matters either small or great is of equal seriousness,
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.