I received the following question:

In Genesis 39:6, why is Potiphar concerned about the food Joseph ate when he trusted him with everything?

I think you are missing the point of the picture. Let’s look at the verse.

6. Thus he left all that he had in Joseph’s hand, and he did not know what he had except for the bread which he ate. Now Joseph was handsome in form and appearance.

What this is telling us is that Potiphar trusted Joseph so completely that he had stopped keeping track of anything he owned. Basically, he didn’t know anything about his own possessions anymore. He trusted Jospeh with them totally. Therefore, the only time he paid any attention at all to what he owned anymore is when he sat down to dinner and saw the kind of food that Joseph had prepared to be on the table. Other than how well they were eating, Potiphar didn’t know a thing about the rest of his investments. Every one of them was entrusted to Joseph. The only real interaction Potiphar had with whether his investments were doing well or poorly was how expensive the meal on his plate was at night. Since the Lord was blessing Joseph in everything he did, those meals must have been very good indeed. Yet as far as he knew, he could have been bankrupt, and as long as the meals at dinnertime were still good, he wouldn’t have known anything about it unless Joseph told him.

So the point is not that he didn’t care about most things anymore, but he did care about his food. The point is that mealtime was the only time he ever even thought about how well his investments were doing, because it was the only time he ever had any reason to think about them, and even then he only thought about how good the meal was. Everything else he left in the hands of Joseph.