Genesis 31:40-41

40This is what it was like to work for you: I worked in the strong heat of the sun in the day. I had pain from the cold at night. I could not always sleep.

41It was like this for 20 years as I worked like a slave for you. I worked for 14 years to pay you for your two daughters. Then I worked for six years for your sheep and goats. You changed what you paid me at least ten times!