וַיֹּ֥אמֶר אֵלֶ֖יהָ תְּנִֽי־לִ֣י אֶת־בְּנֵ֑ךְ וַיִּקָּחֵ֣הוּ מֵחֵיקָ֗הּ וַֽיַּעֲלֵ֙הוּ֙ אֶל־הָעֲלִיָּ֗ה אֲשֶׁר־הוּא֙ יֹשֵׁ֣ב שָׁ֔ם וַיַּשְׁכִּבֵ֖הוּ עַל־מִטָּתֽוֹ׃
Respondeu-lhe ele: Dá-me o teu filho. E ele o tomou do seu regaço, e o levou para cima, ao quarto onde ele mesmo habitava, e o deitou em sua cama.
From David to Destruction
It is a bold question that is most definitely not addressed by the classic Mefarshim. For a year, Eliyahu HaNavi lives in the widow's attic mentioned in Melachim I 17:19. The question, accordingly, is that this seems to constitute a forbidden living arrangement, as it violates Yichud, the prohibition of seclusion.