We may be used to treating personal names like labels, but they’re much more than that. God revealed his name to Moses at the burning bush, and over time, that name was taken as too holy to say aloud. As Christians, we’ve been taught to pray in the name of Jesus, as Jesus himself taught his disciples to do. But do we have a sense of what we’re doing when we say “in Jesus’ name”? That’s important to what John wants Gaius to understand about the significance of hospitality.