Dine with. Have a meal with. “Sup” as in supper or dinner.
Eating was a very private thing. Sharing a meal usualy meant that you had a relationship with that person. And if the king invited you to dinner, well, that was a great honor.
Covenants, which create family bonds, were sealed with an oath, a sacrifice, and a shared meal. And it’s no different today. Marriage is a covenant where we vow fidelity, we sacrifice our own desires for the sake of the marriage, and we have a huge feast.
Christ’s new covenant is the same - we renounce satan and swear allegiance to this Church at baptism and again at confirmation and yet again at every Mass, Christ himself is the sacrifice and in return we offer the sacrifice of love and obedience to him, and we share in the perfect meal - the Eucharist - which is a foretaste of that meal we will have with Jesus in heaven at the wedding feast of the lamb.
-Tim-