You work hard to provide for your family. You finally find the time to make dinner, and you go all out and make your favorite thing from scratch. And then your kid, who used to love your favorite thing, decides that she doesn't like it any more.
In Jesus' time, the laws of hospitality trumped religion, culture, tribe, etc. In areas with scarce resources (back then, the distance between drive-through burger joints was measured in counties), someone's hospitality might be all that separated you from starving.
If you were the host, hospitality demanded that you share your best. Even the poor were called to share what little they had. Because what the host shared often was a sacrifice on their part, the person receiving was supposed to be grateful for whatever was provided.
When your kid refuses something you made from scratch, it hurts. In Jesus' time, refusing someone's hospitality was more than a rejection of the food, it was a rejection of the person who provided it and a huge insult. This insult is a key to the meaning of Sunday's Gospel reading.
More on this tomorrow.