Jesus was speaking to the church of Laodica also known as the Lukewarm church. They would go about their religious duties but not give their hearts to Jesus.
Dining often is done with people we have relationships with. In this verse Jesus is reaching out to the religious person to hear him and fellowship with him as a friend or brother. In other words he wants a relationship with us.
“These things I command you, that ye love one another. If the world hate you, ye know that it hated me before it hated you. If ye were of the world, the world would love his own: but because ye are not of the world, but I have chosen you out of the world, therefore the world hateth you. Remember the word that I said unto you, The servant is not greater than his Lord. If they have persecuted me, they will also persecute you; if they have kept my saying, they will keep your's also. But all these things will they do unto you for my name's sake, because they know not him that sent me. If I had not come and spoken unto them, they had not had sin: but now they have no cloke for their sin. He that hateth me hateth my Father also. If I had not done among them the works which none other man did, they had not had sin: but now have they both seen and hated both me and my Father. But this cometh to pass, that the word might be fulfilled that is written in their law, They hated me without a cause. ...