Keeping the Faith

As Houthi rebels continue targeting commercial vessels in the Red Sea and surrounding waters, some ships have resorted to an unusual tactic: claiming to be Muslim to avoid being attacked.

The Houthis, who control parts of Yemen, have declared that their strikes focus on ships linked to Israel, the United States, and Western allies in retaliation for the war in Gaza. In response, certain vessels have begun broadcasting Islamic phrases over radio frequencies or displaying flags of Muslim-majority countries, hoping to signal religious or political alignment that would spare them from attack.

Maritime intelligence sources report that some crews have gone so far as to paint Islamic declarations or place Qur’anic verses on visible parts of their ships. The idea is that Houthis, who see themselves as defenders of Islam against Western aggression, may refrain from harming fellow Muslims or those showing Islamic symbols.

Beyond its strategic implications, this phenomenon raises a serious halachic question: may a Jew claim to be Muslim—or intentionally mislead others into thinking he is Muslim—to save his life? Throughout Jewish history, people have given up their lives rather than accept another religion. Idolatry is one of the three cardinal sins for which one must sacrifice his life rather than transgress (according to accepted halacha, but see Avoda Zara 26b and Tosfos there). Would declaring oneself to be a member of another religion, even falsely, be considered forsaking one’s faith?

This dilemma is not new. It echoes questions asked by many throughout the ages.

The Gemara (Avoda Zara 18b) recounts how Rebbe Meir rescued his sister from captivity. Afterwards, the government issued an ancient form of a wanted poster, displaying a carving of Rebbe Meir’s face in public places. Once, someone recognized him and pursued him into a non-Jewish establishment. Observers saw him eating non-kosher food and assumed he could not be the renowned rabbi. In reality, he cleverly dipped one finger into the food and sucked a different finger, giving the impression he was eating without actually transgressing. By creating this misperception of being a non-Jew, he was able to escape.

Yet the Gemara in Sanhedrin rules unequivocally that one may not accept a foreign deity even outwardly, regardless of his internal belief. He may not falsely declare that he accepts another religion. The Shulchan Aruch (YD 157:2) reconciles this ruling with Rebbe Meir’s story by distinguishing between an explicit verbal denial of Judaism and merely creating an impression. Declaring outright, “I am a gentile” or overtly accepting another faith to save one’s life is prohibited. However, acting in a manner that leads others to mistakenly assume he is not Jewish, without direct verbal denial, is permitted, as demonstrated by Rebbe Meir’s conduct. Indeed, the Vilna Gaon, in his commentary on Shulchan Aruch, writes that this leniency is derived from Rebbe Meir’s story, where he concealed his identity to achieve his goal without uttering words of denial.

Furthermore, the Rema adds that one may even hide his identity by wearing a non-Jew’s garment that contains shatnez if necessary to save his life. The logic is that once it is permitted to allow others to mistakenly believe he is not Jewish to avoid danger, then violating an ordinary lav such as wearing shatnez is certainly permitted in life-threatening circumstances, as the preservation of life overrides standard prohibitions.

Interestingly, however, the Bach appears to disagree. He rules that if there is a route known to be dangerous for Jews, a Jew may not don garments containing shatnez in order to traverse it safely. Nonetheless, he permits dressing in the style of a gentile to avoid danger. The Shach explains that the Bach is not actually disputing the principle that pikuach nefesh overrides such prohibitions. Rather, the Bach maintains that one should not willingly place himself in a situation where he would later be forced to wear shatnez to save his life. However, if he already finds himself in such danger, he may certainly wear shatnez to protect himself. The Shach, though, limits Bach’s leniency regarding dressing like a gentile to circumstances where the journey is necessary for one’s livelihood or an unavoidable obligation. To disguise oneself as a gentile merely for leisure or unnecessary travel, such as taking a pleasure cruise, would not be permitted under this ruling.

Rabbi Ephraim Oshry discusses the question of a soldier wearing identification that falsely identifies him as not Jewish. His letter is found in “She’eilos U’Teshuvos Mima’amakim” ( Vol 1 Siman 44). This monumental work contains halachic responsa he wrote while in the Kovno Ghetto, addressing pressing life-and-death questions of that era.

In that responsum, a Jewish soldier asked whether he could wear a tag indicating he was of another religion or nationality to avoid being executed if caught. Rav Oshry ruled that although it is forbidden to deny one’s Judaism explicitly, in a case where there is mortal danger, if the tag merely identifies him with a different nationality or religion without him verbally renouncing Judaism, it would be permitted. He compares it to cases in the Gemara and poskim where one may create a mistaken impression to save his life, provided he does not actually deny his faith or verbally accept another religion.

Therefore, it would seem that if Jewish travelers on these boats are undertaking a necessary journey, they would be permitted to give the false impression that they are Muslim in order to avoid an attack by the Houthis.