There is no more monstrous idea than the idea that you can fall away from grace, that you can ever be born again and then be damned - D Martyn Lloyd Jones

"There is no more monstrous idea than the idea that you can fall away from grace, that you can ever be born again and then be damned. The character of God is involved! It is impossible. His object is not merely to save me, it is to vindicate His own being and nature, and I am being used to that end. The end is absolutely certain because God's character is involved in it." 

- D Martyn Lloyd-Jones 

(Ephesians - God's Way Of Reconciliation)