Matthew 8:12

Verse 12. The children of the kingdom. That is, the children, or the people, who expected the kingdom; or to whom it properly belonged; or, in other words, the Jews. They supposed themselves peculiarly the favourites of heaven. They thought the Messiah would, enlarge their nation, and spread the triumphs of their kingdom. They called themselves, therefore, the children of the members of the kingdom of God, to the exclusion of the Gentiles. Our Saviour used the manner of speech to which they were accustomed, and said that many of the pagans would be saved, and many Jews lost. Shall be cast out into outer darkness, etc. This is an image of future punishment.