The kingdom of heaven is like unto a certain king, which made a marriage for his son,
Note 1 at Mt 22:2: The Lord's purpose for this parable was to picture the guilt of Israel in ignoring and rejecting the invitation to enter the kingdom (Mt 22:3). He plainly indicated the results of Israel's rejection, the suffering of the nation, and the destruction of Jerusalem (Mt 22:7). He also showed that the Gentiles would be gathered into the church (Mt 22:8-10).
There will also be a final separation before the blessings of the kingdom begin, pictured by the fate of the man "which had not on a wedding garment" (Mt 22:11). He was cast into outer darkness (Mt 22:13). Those who are to enjoy the kingdom must be arrayed in robes of righteousness, provided through faith in Christ. "For many are called, but few are chosen" (Mt 22:14, see note 3 at Mt 20:16). Eternal life is represented as a free choice on man's part and a divine calling on God's part.