Genesis 42:7-10
When Joseph saw his brothers, he recognized them, but he treated them as strangers and spoke harshly to them. "Where have you come from?" he asked. "From the land of Canaan, " they replied. "We are here to buy food." . . .

Genesis 43:7, 29
They replied, "The man questioned us in detail about ourselves and our family: 'Is your father still alive? Do you have another brother?' And we answered him accordingly. How could we possibly know that he would say, 'Bring your brother here'?" . . .