In the development of the principle the Master's thought has been enlarged so as to include not teachers only, but all His disciples; and His range of view has been extended so as to embrace the last things. The great day of Judgment is before him. He sees the multitudes gathered around the throne. He foresees that there will be many on that great day who will discover, when it is too late, that they have allowed themselves to be deceived, that they have not been careful enough to test their spiritual guides, that they have not been careful enough to try themselves and make sure that their fruits were such that the Lord of the vineyard could recognise them as His own. He is filled with sympathy and sorrow at the prospect; so He lifts up His voice in earnest warning, that, if possible, none of those to whom the words will ever come may allow themselves to fall into so fatal an error: "Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of My Father which is in heaven." How naturally, and as it were unconsciously and inevitably, He has passed from the Teacher to the Judge! Not as a personal claim. In His earliest teaching He kept personal claims as much in the background as possible. But now it is impossible to avoid some disclosure of His divine authority. He must speak of the Judgment; and He cannot speak of it without making it appear that He is Judge. The force of this is all the greater that He is, as it were, surprised into it; for He is evidently not thinking of Himself at all, but only of those who then were or would afterwards be in danger of making a most fatal mistake, leading to consequences awful and irreparable. We can well imagine that from this point on to the end there must have been a light on His face, a fire in His eye, a solemnity in His tone, a grandeur in His very attitude, which struck the multitude with amazement, especially at the _authority_ (ver. 29) with which He spoke: "Many will say to Me in that day, Lord, Lord, did we not prophesy by Thy name, and by Thy name cast out devils, and by Thy name do many mighty works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity" (R.V.). Again, observe the form the warning takes, revealing the consciousness that to depart from Him was _doom_--one of the many tokens throughout this discourse that none else than the Lord of life and glory could possibly have spoken it. Yet how many vainly think that they can accept it without acknowledging Him!