מדרש אויף בראשית 24:12

“He said: Lord, God of my master Abraham, please arrange it for me today, and perform kindness with my master Abraham” (Genesis 24:12).
“He said: Lord, God of my master Abraham, please arrange it for me today…” “Who among you fears the Lord, who heeds the voice of His servant…” (Isaiah 50:10). “Who among you fears the Lord” – this is Abraham;¹See Genesis 22:12. “who heeds the voice of His servant…” – [this means] that the Holy One blessed be He heeded the voice of his [Abraham’s] servant. “Who walked in darkness” (Isaiah 50:10) – as he came forth from Mesopotamia and its environs, but he did not know where he was to go, like a person who is situated in the dark. “And there was no light for him” (Isaiah 50:10) – and who provided illumination for him? The Holy One blessed be He provided illumination for him every place that he would go. “Let him trust in the name of the Lord and rely on his God” (Isaiah 50:10) – “[You called his name Abraham,] and You found his heart faithful before You” (Nehemiah 9:7–8).
Another interpretation, “Who among you fears the Lord” – this is Eliezer; “who heeds the voice of His servant…” – [he heeded] the voice of Abraham who was the servant of the Holy One blessed be He, as it is stated: “For the sake of My servant, Abraham” (Genesis 26:24). “Who walked in darkness” – when he went to bring Rebecca. “And there was no light for him” – and who provided illumination for him? The Holy One blessed be He provided illumination for him, with shooting stars and lightning. “Let him trust in the name of the Lord and rely on his God” – “He said: Lord, God of my master Abraham, please arrange it for me today.”

It is written: “A wise servant will dominate a shameful son and will share in an inheritance among brothers” (Proverbs 17:2). “A wise servant” – this refers to Eliezer. What was his wisdom? He said:²Before he became Abraham’s slave. ‘He³Referring to himself. already has the curse of that man upon him,⁴“Cursed be Canaan; a slave of slaves shall he be to his brothers” (Genesis 9:25). Eliezer was a descendant of Canaan (see Bereshit Rabba 59:9). perhaps a Kushite or barbarian will come along and enslave me. It is preferable to be enslaved in this household [of Abraham] and not in any other household.’ “Will dominate a shameful son” – this refers to Isaac,⁵Abraham gave him control over Isaac in the sense that he was entrusted to choose a bride for him. who put all the idolaters to shame when he was bound atop the altar.⁶With his complete dedication to God’s will, he put all the idolaters to shame. “And will share in an inheritance among brothers” – among Israel; just as they mention the merit of the patriarchs [in their prayers], so, too, this one mentioned the merit of the patriarchs [in his prayer]: “He said: Lord, God of my master Abraham…”
“And perform kindness with my master Abraham” – [Eliezer said:] ‘If you begin something, finish it.’⁷This is a popular saying. Eliezer applied it in his prayer to God: ‘You shortened my path for Abraham’s sake, help me complete the mission.’ Rabbi Ḥagai said in the name of Rabbi Yitzḥak: Everyone requires kindness. Even Abraham, for whose sake [divine] kindness spreads throughout the world, required kindness, as it is stated: “And perform kindness with my master Abraham” – if you begin something, finish it.

“Isaac said to his son: How is it that you were so quick to find it, my son? And he said: Because the Lord your God coordinated it before me” (Genesis 27:20).
“Isaac said to Jacob: Please approach, that I may feel you, my son, are you my son Esau or not?” (Genesis 27:21).
“Isaac said to his son: How is it that you were so quick to find it, my son?” – you were so quick to find the blessing, my son? Your father was blessed at seventy five years old,³³God blessed Isaac after Abraham’s death. Abraham died at age one hundred and seventy-five. Isaac was born when Abraham was one hundred years old. and you are sixty-three years old.³⁴See Bereshit Rabba 62:5.
“And he said: Because the Lord your God coordinated it before me” – Rabbi Yoḥanan and Reish Lakish, one of them said: If for your offering, the Holy One blessed be He provided for you, as it is stated: “Abraham lifted his eyes and saw that behold, there was a ram” (Genesis 22:13); for your food, all the more so. The other said: If for your mate He provided for you, as it is stated: “Please arrange it for me today” (Genesis 24:12), and it is written: “Behold, he saw camels coming” (Genesis 24:63); for your food, all the more so.
“And he said: Because the Lord your God coordinated it before me” – Rabbi Yoḥanan said: This is analogous to a raven that brought fire to its nest. When he said: “Because the Lord your God coordinated it before me,” Isaac said: ‘I know that Esau would not mention the name of the Holy One blessed be He; this one mentions. This is not Esau, but Jacob.’ When Isaac said to Jacob: “Please approach, that I may feel you, my son,” water spilled on his [Jacob's] thighs,³⁵He urinated in fear. and his heart was as soft as wax. The Holy One blessed be He appointed two angels for him, one to his right and one to his left, and they were holding his elbow so he would not fall. That is what is written: “Do not waver [tishta], as I am your God” (Isaiah 41:10) – do not become wax [tishva].