잠언 17:2 미드라쉬: Bereshit Rabbah

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.