Genesis 44:28

And we said, We cannot go down: if our youngest brother be with us, then will we go down: for we may not see the man's face, except our youngest brother [be] with us.

And thy servant my father said unto us, Ye know that my wife bare me two [sons]:

And if ye take this also from me, and mischief befall him, ye shall bring down my gray hairs with sorrow to the grave.

Now therefore when I come to thy servant my father, and the lad [be] not with us; seeing that his life is bound up in the lad's life;