Let's open the Word of God, thank you, Noel, let's open to the Word of God to the seventh chapter of Mark...seventh chapter of Mark.
Now remember that Mark is in Rome when he writes this gospel. Mark is writing from Rome and he's writing an account of the life and death and resurrection of the Lord Jesus Christ for Gentile readers, primarily. Obviously it extended to everyone but his primary goal is to write for the Gentile world.
It is then important to Mark that he communicates in his gospel that salvation extends to the whole world. You wouldn't get that message if you just talked to the Jews of New Testament times. They viewed Gentiles as outcasts. They viewed them as aliens from the covenants of God, separated from the life of God, the purpose of God...to borrow some of the language of the Apostle Paul. They saw the Gentile world as cursed, under divine judgment and they alone were the ones who would receive the great benedictions and benefits of salvation.
But that only reflected their misunderstanding of the Old Testament. They had become very isolated from the Gentile world and generally speaking hostile to the Gentiles around them. But that was not the attitude of our Lord and nor was that what the Old Testament promised....