“Therefore say I unto you, The kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof.”
King James Version (KJV)
21:43 Therefore - Because ye reject this corner stone. The kingdom of God - That is, the Gospel.
Mt 21:43 Given to a nation bringing forth the fruits. The kingdom was taken from the Jews and given to the "chosen nation"; not any particular nation, but those chosen out of the nations to be a "peculiar people" (1Pe 2:9).