What does Genesis 42:7 mean?
When Joseph was just seventeen years old (Genesis 37:2), his jealous older brothers sold him into slavery (Genesis 37:28). Thirteen years later, Joseph ascended to second-in-command over the entire nation of Egypt (Genesis 41:41–46). A further seven years of prosperity followed (Genesis 41:53–54), and then a famine. Joseph is now nearing forty years of age. He wears the clothes of an Egyptian officer (Genesis 41:14, 42) and uses an Egyptian name (Genesis 41:45). As the world struggles under the famine, only Egypt has food thanks to Joseph's work (Genesis 41:55–57).One can only imagine how shocked Joseph must have been to see his own brothers appear to ask to buy grain (Genesis 42:1–6). Adding to the drama, the men are bowing to him—exactly as Joseph predicted they would so many years ago (Genesis 37:5–11). The following verses will show that Joseph does not harbor a grudge; at the same time, he is reasonably suspicious of how his brothers might react to his survival. And, it is entirely reasonable for Joseph to feel a surge of anger, as he once again faces the family members who horribly betrayed him.
For all these reasons, Joseph speaks to them as if he neither knows nor trusts them. This is partly to disguise his own emotions (Genesis 42:23–24). It also gives him opportunity to test their intentions. They answer truthfully, revealing to him they still dwell in Canaan (Genesis 37:1). They have come to buy food, along with so many others facing starvation due to the famine.