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… Revelation 3:20
I. THAT THERE IS IN THE HUMAN SOUL A DOOR FOR THE ENTRANCE OF THE TRUTH.
1. The intellect. Is not the theology of the Bible in its broad outlines reasonable? Christ, in the evidence, enlightenment, and conviction of the truth, stands knocking at the mind of man, and the greater the knowledge of the truth, the louder is the appeal for entrance.
2. The heart. Man is endowed with the capability of love and sympathy. He has warm affections. He is so constituted as to be attracted by the pathetic and the beautiful. Hence, he looks out upon nature with admiring eye. And it is to this capability in man that the truth appeals. It presents to him an ideal beauty in the life of Christ, as recorded by the gospel narrative, which ought to win his spirit into an imitation of the same.
3. The conscience. Man has the ability to turn his natural judgment to moral and spiritual questions, and this is what we mean by conscience. To this faculty the truth presents its requirements; convinces of failure in the devotion of the inner life to Christ; and spreads out before it the threat of avenging justice.
4. But, strange to say, the door of the soul is closed to the entrance of the truth. The door of the mind is closed by error, by ignorance, and by prejudice. The door of the heart is shut by pride, by unbelief, and by wilful sin. The door of the conscience is barred by a continued habit of evil.
II. THAT AT THE DOOR OF THE HUMAN SOUL TRUTH MAKES CONTINUED APPEALS FOR ENTRANCE.
1. This appeal of truth is authoritative. Truth comes to men with authority, even with the claim of a sinless life, and with the emphasis of a Divine voice. Its distinguished character should gain for it an immediate and hearty welcome into the soul, as a king should be welcomed into a cottage. But truth comes to men not only with the authority of character, but also with the authority of right. The faculties of the human mind were made to receive it.
2. The appeal of Truth is patient. Other guests have entered — wealth in splendid apparel, ambition with loud clamour, and pride with haughty mien — but Christ with gentle spirit has remained without. His patience has been co-extensive with our neglect of Him. It is Divine.
3. The appeal of truth is benevolent. The truth does not seek to enter the soul of man merely to spy out its moral defilement, to pass woful sentence on its evil-doings, but to cleanse it by the Holy Spirit, to save it by grace, to enlighten it by knowledge, and to cheer it by love.
4. The appeal of truth is heard. "And knock." Knocks at the door are generally heard. And certainly this is the case in reference to the advent of Christ to the soul. It is impossible to live in this land of religious light and agency without being conscious of Divine knockings at the portal of the soul.
III. THAT THE HUMAN SOUL HAS THE ABILITY OF CHOICE AS TO WHETHER IT WILL OPEN ITS DOOR FOR THE ENTRANCE OF THE TRUTH OR NOT.
1. The door of the soul will not be opened by any coercive methods. Does it not seem strange that Christ should have the key of the soul and yet stand without? This is only explained by the free agency of man. But though He enter not to dwell, the soul is visited by spiritual influences which are the universal heritage of man.
2. The door of the soul must be opened by moral methods. Calm reflection, earnest prayer, and a diligent study of the inspired Word, together with the gentle influences of the Divine Spirit, will open the soul to the entrance of Christ (Acts 16:14).
IV. THAT IF THE HUMAN SOUL WILL OPEN ITS DOOR TO THE RECEPTION OF THE TRUTH, CHRIST WILL ENTER INTO CLOSE COMMUNION WITH IT.
1. Then Christ will inhabit the soul. "I will come in to him." Thus, if Christ come into the soul He will dwell in its thoughts, in its affections, in its aspirations, in its aims, and in all its activities. He will elevate and consecrate them all. True religion just means this, Christ in the soul, and its language is (Galatians 2:20).
2. Then Christ will be in sympathy with the soul. "And will sup with him." It is impossible to have a feast in the soul unless Christ spreads the table; then the meal is festive. It removes sorrow; it inspires joy. While we are partaking of it we can relate to Christ all the perplexities of life. The good man carries a feast within him (John 4:32).
3. Then Christ will strengthen the soul. He will strengthen the moral nature by the food He will give, by the counsel He will impart, and by the hope He will inspire. The feast, the supply of holy energy will be resident within.
(J. S. Exell, M. A.)
http://ibiblestudies.com/auth/exell/christ_knocking_at_the_door_of_the_soul.htm