He shall come, etc. - This answer was given by the Pharisees themselves (Mat 21:41), thus pronouncing their own righteous doom. Matthew alone (Mat 21:43) gives the naked application, that “the kingdom of God should be taken from them, and given to a nation bringing forth the fruits thereof” - the great evangelical community of the faithful, chiefly Gentiles.
God forbid - His whole meaning now bursting upon them.