Genesis 30:29-31
29 Jacob said to him, “You know how I have worked for you and how your livestock has fared under my care.
30 The little you had before I came has increased greatly, and the Lord has blessed you wherever I have been. But now, when may I do something for my own household?”
31
“What shall I give you?” he asked.
“Don’t give me anything,” Jacob replied. “But if you will do this one thing for me, I will go on tending your flocks and watching over them: