It’s Owen, actually, who names it. They’re watching Raiders of the Lost Ark and Matty asks what a “covenant” is, and Owen explains it: “It’s like a promise, a rock-solid, die-hard, go-to-the-grave promise. A bond you can’t get out of. It’s like what we all have.” And that’s when they start calling it that. The Covenant. It’s how they’re there for one another. How they’ll do anything for one another. Get revenge. Take a beating. Do what needs doing.