וַיְהִי֙ בְּהַכְרִ֣ית אִיזֶ֔בֶל אֵ֖ת נְבִיאֵ֣י יְהוָ֑ה וַיִּקַּ֨ח עֹבַדְיָ֜הוּ מֵאָ֣ה נְבִאִ֗ים וַֽיַּחְבִּיאֵ֞ם חֲמִשִּׁ֥ים אִישׁ֙ בַּמְּעָרָ֔ה וְכִלְכְּלָ֖ם לֶ֥חֶם וָמָֽיִם׃
for it was so, when Jezebel cut off the prophets of the LORD, that Obadiah took a hundred prophets, and hid them fifty in a cave, and fed them with bread and water.—
Tze'enah Ure'enah
“The Vision of Obadiah. Thus says the Lord God to Edom” [1:1]. The prophet Obadiah prophesied. He was born a gentile in Edom who converted and became a prophet. He prophesied how Edom would have a downfall in the days of the Messiah. That is why, someone from Edom prophesied about Edom. That is to say, let someone from Edom come and let him punish Edom, someone who lived among the two evildoers, Ahab and Jezebel, and did not learn from their evil deeds and remained righteous. Therefore, Obadiah should punish Edom, which is Esau, who lived among two righteous people, Isaac and Rebecca, and did not learn from their learn from their good deeds.1B. Sanhedrin, 39b. Obadiah is also identified with the Obadiah who served Ahab and hid the prophets (I Kings, 18:4).