Genesis 42:7-8

But they didn’t know that he was their brother Joseph. They thought that he was one of the Egypt people. Joseph looked at those men, and he saw that they were his brothers. But Joseph pretended that he didn’t know them. He talked to them in the Egypt language, and somebody else talked to Joseph’s brothers in their own language and told them the things Joseph said. And Joseph talked in a rough way to them. He said, “Where do you mob come from?” His brothers said, “We come from Canaan country. We want to buy food here in Egypt.”