Many are called … chosen. The rejected guest is a type of a numerous class (see Matthew 20:6). All the Jews had first been called; then all the Gentiles; many were they who obeyed not the call; and of those who did come in, many were not of the inner election, of those, that is, whose life and character were worthy of the Christian name, showing the graces of faith, holiness, and love.
Applying the parable generally, Origen (ap. I. Williams) says, "If any one will observe the populous congregations, and inquire how many there are who live a better kind of life, and are being transformed in the renewing of their mind; and how many who are careless in their conversation and conformed to this world, he will perceive the use of this voice of our Saviour's, 'Many are called, but few chosen;' and in another place it has been said, 'Many will seek to enter in, and shall not be able' (Luke 13:24); and, 'Strive earnestly to enter in by the narrow gate; for few there be that find it' (Matthew 7:13, Matthew 7:14)."