Credit to God's Truth for pointing this out in the post just following. Thought I'd put this out there for you to read Grosnick. It's all over the scripture but since we're on the topic of this parable...
Matthew 22:9-14 KJV
(9) Go ye therefore into the highways, and as many as ye shall find, bid to the marriage.
(10) So those servants went out into the highways, and gathered together all as many as they found, both bad and good: and the wedding was furnished with guests.
(11) And when the king came in to see the guests, he saw there a man which had not on a wedding garment:
(12) And he saith unto him, Friend, how camest thou in hither not having a wedding garment? And he was speechless.
(13) Then said the king to the servants, Bind him hand and foot, and take him away, and cast him into outer darkness; there shall be weeping and gnashing of teeth.
(14) For many are called, but few are chosen.
Jesus said in more than a few places that one can lose salvation. That parable above is just one of the examples that I didn't post already. Do you recall the parable of the ten virgins, five foolish and five wise? Or maybe the parable of the servant who was forgiven much but would not forgive his fellow servant who owed little? Those lost their salvation, or their forgiveness was revoked.