1)
Why did Eliezer say "the house of my master's brothers"? Besu'el was Avraham's nephew!
1.
Moshav Zekenim: He wanted to her to hear this and tell her father, so her father would think that his brother came with great wealth, and go out to greet him. 1
2.
Redak: Besu'el was from Avraham's brothers, Nachor, and Haran (Milkah's mother). When he spoke to her family (Pasuk 48), he said "of my master's brother" (singular).
1
It is not clear why it was permitted to mislead him (PF).
