열왕기상 17:22 미드라쉬: Shemot Rabbah, Midrash Tanchuma, Pirkei DeRabbi Eliezer & Bereshit Rabbah

Another interpretation: “Moses went” – that is what is written: “A friend loves at all times, and a brother is born for adversity” (Proverbs 17:17). Who is “a friend loves”? This is Yitro, who accepted Moses when he was fleeing from Pharaoh. From here you learn that one who accepts upon himself to perform a mitzva, that mitzva does not cease from his household. Yitro’s mitzva was that he accepted into his house a deliverer who fled from an enemy. From his house, one emerged who accepted an enemy who fled from a deliverer, and killed him. Who is that? Sisera, as it is stated: “Sisera fled on foot to the tent of Yael, wife of Ḥever the Kenite” (Judges 4:17), and it is written: “The children of the Kenite, father-in-law of Moses” (Judges 1:16). Therefore, it says: “A brother is born for adversity” – because Yitro loved Moses and was his friend, therefore his descendants became brethren to Israel in their time of trouble, and Yael killed Sisera.
When the Holy One blessed be He said to him: “Go now, and I will send you to Pharaoh” (Exodus 3:10), he said to Him: ‘Master of the world, I am not able to do so, because Yitro accepted me and opened his house to me and I am like a son to him. One who opens his door to another, [the latter] owes him his life.’ Likewise, you find regarding Elijah when he went to the widow from Tzarefat, her son died. He began pleading and saying: “Have You brought evil even upon the widow with whom I lodge, to kill her son?”³Due to Elijah’s debt of gratitude toward the widow, he risked his life on her behalf by praying impertinently for her son’s revival. Similarly, Moses risked his life for Yitro by not undertaking God’s mission without Yitro’s permission (Etz Yosef). (I Kings 17:20). And it is written: “The Lord heeded the voice of Elijah, and the soul of the child was restored” (I Kings 17:22).
Moreover, anyone who opens his door to another, [the latter] is obligated in his honor more than in the honor of his father and mother. You find that at the moment that Elijah was taken from Elisha, and [Elisha] was privileged to take a double portion of his spirit, as it is stated: “Please, let a double portion of your spirit be upon me” (II Kings 2:9), he should have gone to his father and mother and revived them as he did the son of his hostess.⁴See II Kings, chap. 4. Likewise, Elijah should have revived his ancestors, as he did the son of the [widow from] Tzarefat, but he risked his life [only] on behalf of his hostess. That is why Moses said before the Holy One blessed be He: ‘Yitro accepted me and treated me with respect; I will go only with his permission.’ Therefore, it is written: “Moses went and returned to Yeter his father-in-law.”

At the time the Holy One, blessed be He, said to Moses: Come now, therefore, and I will send thee unto Pharaoh (Exod. 3:10), Moses replied: “Master of the Universe, I cannot leave, for Jethro welcomed me and opened his home unto me, and I am like a son unto him.” If one opens his door to his fellowmen, the latter owes him his very life. You find this occurred at the time Elijah visited the widow in Zarephath. After her son’s death, he began to plead: O Lord my God, hast Thou also brought evil upon the widow with whom I sojourned, by slaying her son? (I Kings 17:20). Whereupon, The Lord harkened unto the voice of Elijah; and the soul of the child came back into him, and he revived (ibid., v. 22).

"He and she" (indicate that it was) by the merit of Elijah that they had to eat. After (a period of) days, the son of the woman fell sick and died, as it is said, "And it came to pass after these things that the son of the woman fell sick" (1 Kings 17:17). The woman said to him (Elijah): Thou didst come unto me for coition, and thou wilt bring my sin to remembrance against me, and my son is dead. Now take away all that which thou hast brought to me, and give me my son. Elijah, may he be remembered for good, arose and prayed before the Holy One, blessed be He, and said before Him: Sovereign of all the worlds ! Is it not enough (to endure) all the evils which have befallen me, but also this woman; for I know that out of sorrow for her son has she spoken of a matter which has not occurred, which she has brought against me to vex me. Now let all the generations learn that there is a resurrection of the dead, and restore the soul of this lad within him; and He was entreated of him, as it is said, "And the Lord hearkened unto the voice of Elijah" (1 Kings 17:22). Another Scripture text says, "And Elijah || took the child… See, thy son liveth" (1 Kings 17:23).