Genesis 43:6 Meaning

4If thou wilt send our brother with us, we will go down and buy thee food:

5But if thou wilt not send him, we will not go down: for the man said unto us, Ye shall not see my face, except your brother be with you.

6And Israel said, Wherefore dealt ye so ill with me, as to tell the man whether ye had yet a brother?

7And they said, The man asked us straitly of our state, and of our kindred, saying, Is your father yet alive? have ye another brother? and we told him according to the tenor of these words: could we certainly know that he would say, Bring your brother down?

8And Judah said unto Israel his father, Send the lad with me, and we will arise and go; that we may live, and not die, both we, and thou, and also our little ones.