Genesis 42:37-38

Then Reuben said to his father, “You may put my two sons to death if I don’t bring Benjamin back to you. Trust him to my care, and I will bring him back to you.” But Jacob said, “I will not allow Benjamin to go with you. His brother is dead, and he is the only son left from my wife Rachel. I am afraid something terrible might happen to him during the trip to Egypt. Then I would be sad until the day I die.”