Kabbalah zu Bereschit 24:34

"...and a servant his master" refers to Eliezer, the servant of Abraham. This has been explained. The man came to Charan with great wealth and camels loaded with many gifts to lavish, yet he did not say to Betu'el and Laban, that he is Abraham's friend, or any other man, who came at Abraham's request, but when he started his speech, it is written, "And he said, I am Abraham's servant" (Beresheet 24:34). Later, he repeated 'my master' (several times). Because he respected Abraham with honor and kindness, they were patient with him for some time.