 his blood. Now, why does that make sense to use the gift of one's blood for a covenant? Well, because a covenant is making a family, and blood is always deeply related to being family. I mean, to this day, we say, he's blood to me, right? That means he's my cousin or something. He's a family member. But when our Lord drew at the Last Supper, says, this cup is the new covenant in my blood, he's harking back