Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me.
Elder Spencer W. Kimball, then a member of the Quorum of the Twelve Apostles, told the following story about Revelation 3:20:
“Holman Hunt, the artist, felt inspired to capture this stirring scripture on canvas. One day he was showing his picture of ‘Christ Knocking at the Door’ to a friend when the friend suddenly exclaimed: ‘There is one thing wrong about your picture.’
“‘What is it?’ inquired the artist.
“‘The door on which Jesus knocks has no handle,’ replied his friend.
“‘Ah,’ responded Mr. Hunt, ‘that is not a mistake. You see, this is the door to the human heart. It can only be opened from the
inside.’ “And thus it is. Jesus may stand and knock, but each of us decides whether to open. The Spirit is powerless to compel
a man to move. The man himself must take the initiative
(The Miracle of Forgiveness 1969, 212).