Genesis 44:19
My lord had asked his servants, saying, 'Do you have a father or a brother?'
Genesis 43:7
And they said, "The man asked explicitly about us and about our family, saying, 'Is your father still alive? Do you have a brother?' And we answered him according to these words. How could we know that he would say, 'Bring down your brother'?"
Genesis 42:7-10
And Joseph saw his brothers and recognized them, but he pretended to be a stranger to them. And he spoke with them harshly and said to them, "From where have you come?" And they said, "From the land of Canaan to buy food."
Genesis 43:29
Then he lifted up his eyes and saw Benjamin his brother, the son of his mother, and said, "Is this your youngest brother of whom you told me?" And he continued, "God be gracious to you, my son."