Genesis 43:3
And Judah spake unto him, saying, The man did solemnly protest unto us, saying, Ye shall not see my face, except your brother be with you. And Judah spake unto him, saying, The man did solemnly protest unto us, saying, Ye shall not see my face, except your brother be with you.
The verse looks back to the brothers' first journey to Egypt, when Benjamin stayed behind and they told the Egyptian ruler that their youngest brother was with their father and that another brother was gone. Judah is reporting the ruler's solemn and firm demand that they would not be allowed to see his face again unless Benjamin came with them. He says this in answer to Jacob's request to go back to Egypt to buy food, to explain that they cannot go or return there without their younger brother.
He speaks under pressing want during the continuing famine, when the grain brought from Egypt is running out and Jacob's children and their households are calling for food. Jacob resists because he clings to Benjamin with all the strength of a mother's love, having deeply felt the loss of Joseph. Judah uses the ruler's warning to press Jacob to let Benjamin go.
Judah becomes surety for his brother, agreeing to bear the blame forever if he does not bring him back. He points out that their lingering over Jacob's unwillingness has already wasted time enough to have journeyed to Egypt and returned again.