Why didn't Jacob simply refuse to go along with this bold, obvious swindle? Again, Robert Alter's insights are invaluable. When Jacob asks, 'Why have you DECEIVED me?' the Hebrew word is the same one used in chapter 27 to describe what Jacob did to Isaac. Alter then quotes an ancient rabbinical commentator who imagines the conversation the next day between Jacob and Leah. Jacob says to Leah: 'I called out Rachel in the dark and you answered. Why did you do that to me?' And Leah says to him, 'Your father called out Esau in the dark and you answered. Why did you do that to him?' His fury dies on his lips. He sees what it is like to be manipulated and deceived, and he meekly complies with Laban's offer.
~ Timothy J. Keller