Rois 2 17:26 Midrash : Midrash Tanchuma

וַיֹּאמְר֗וּ לְמֶ֣לֶךְ אַשּׁוּר֮ לֵאמֹר֒ הַגּוֹיִ֗ם אֲשֶׁ֤ר הִגְלִ֙יתָ֙ וַתּ֙וֹשֶׁב֙ בְּעָרֵ֣י שֹׁמְר֔וֹן לֹ֣א יָֽדְע֔וּ אֶת־מִשְׁפַּ֖ט אֱלֹהֵ֣י הָאָ֑רֶץ וַיְשַׁלַּח־בָּ֣ם אֶת־הָאֲרָי֗וֹת וְהִנָּם֙ מְמִיתִ֣ים אוֹתָ֔ם כַּאֲשֶׁר֙ אֵינָ֣ם יֹדְעִ֔ים אֶת־מִשְׁפַּ֖ט אֱלֹהֵ֥י הָאָֽרֶץ׃

On dit alors au roi d’Assyrie: "Les nations que tu as transportées et établies dans les villes de la Samarie ne connaissent pas le culte du Dieu du pays. C’est pourquoi il a lancé contre eux des lions, qui les font périr à cause de l’ignorance où ils sont du culte à rendre au Dieu du pays."

Midrash Tanchuma

After the Israelites were expelled from Samaria, Sennacherib stationed his officers there to collect taxes for his government from those he had settled there. The Holy One, blessed be He, sent lions among them, as it is said: Therefore the Lord hath sent lions among them, which killed some of them (II Kings 17:25). The tax collectors sent a message to him, saying: The nations which thou hast carried away and placed in the cities of Samaria, know not the manner of the God of the land; therefore He hath sent lions among them, and behold, they slay them (ibid., vv. 26–27). Whereupon he summoned all the elders of Israel and said to them: “During the years in which you dwelt in your land, wild beasts never devoured you; why is this happening now?” They whispered to each other: “Let us all give the same answer and perhaps he will permit us to return.” They told him: “That land welcomes no one who does not occupy himself with the Torah and is uncircumcised.” “Then select two men from among you,” he replied, “to go there and instruct them.” Since a king’s command may not be rescinded, they sent R. Dostai the son of Yannai and R. Sabaya there. They taught them the written Torah in abbreviated form.