LUKE 22:14 So when the hour came, he reclined at the table along with the apostles. And he said to them: “I have greatly desired to eat this Passover with you before I suffer; 16 for I tell you, I will not eat it again until it is fulfilled in the Kingdom of God.” 17 And accepting a cup, he gave thanks and said: “Take this and pass it from one to the other among yourselves, 18 for I tell you, from now on, I will not drink again from the product of the vine until the Kingdom of God comes.”
19 Also, he took a loaf, gave thanks, broke it, and gave it to them, saying: “This means my body, which is to be given in your behalf. Keep doing this in remembrance of me.” Also, he did the same with the cup after they had the evening meal, saying: “This cup means the new covenant by virtue of my blood, which is to be poured out in your behalf.
The Watchtower—Study Edition | January 2024
Are You Ready for the Most Important Day of the Year?
19 Is it any wonder that Jesus arranged for us to observe the Memorial of his death each year? When we do, we benefit ourselves and others in many ways. (Isa. 48:17, 18) We grow in our love for Jehovah and Jesus. We show how much we appreciate what they have done for us. We strengthen our bonds with our fellow believers. And we may help others learn how they too can enjoy the blessings that the ransom makes possible. Let us do all we can, then, to be ready for this year’s Memorial—the most important day of the year!
If I read Luke 22:14-20, Jesus only extended an invitation to his apostles. Jesus never invited anyone that wasn't going to rule with him in heaven. There were no observers in the room, nor an invitation to non-Christians.
Jesus never arranged for anyone to fill a seat and observe the Memorial. The whole point of the observation and invitation of the Memorial is for the Governing Body demonstrate and consolidate their power over the rank & file!