Lift up your heads ... - The repetition here is designed to give force and emphasis to what is uttered. The response in Psalm 24:5 is slightly varied from the response in Psalm 24:8; but the same general sentiment is expressed. The design is to announce in a solemn manner that the symbol of the divine presence and majesty was about to be introduced into the place of its permanent abode, and that this was an event worthy to be celebrated; that even the gates of the city should voluntarily open themselves to admit the great and glorious King who was to reign there forever.

Lift up your heads, O ye gates even lift them up, ye everlasting doors; and the King of glory shall come in. See Gill on Psalm 24:7. This is repeated on account of the backwardness and negligence of churches, and particular believers, to open and let Christ in; as may be seen in the case of the church in Sol 5:2; as well as the more to set forth the greatness and glory of Christ, about to make his entrance, and to command a proper awe and reverence of him: some think respect is had to the twofold coming of Christ; first into the second temple, and next at the last judgment; though rather the certainty of his coming, in a spiritual manner, to his church and people, is here designed.

Lift up your heads, O ye gates; even lift them up, ye everlasting doors; and the King of glory shall come in.

24:9 Lift up - The same verse is repeated again, to awaken the dulness of mankind, who are so hardly brought to a serious preparation for such solemnities; and to signify the great importance of the matter, contained under these expressions.

24:7-10 The splendid entry here described, refers to the solemn bringing in of the ark into the tent David pitched for it, or the temple Solomon built for it. We may also apply it to the ascension of Christ into heaven, and the welcome given to him there. Our Redeemer found the gates of heaven shut, but having by his blood made atonement for sin, as one having authority, he demanded entrance. The angels were to worship him, Heb 1:6: they ask with wonder, Who is he? It is answered, that he is strong and mighty; mighty in battle to save his people, and to subdue his and their enemies. We may apply it to Christ's entrance into the souls of men by his word and Spirit, that they may be his temples. Behold, he stands at the door, and knocks, Rev 3:20. The gates and doors of the heart are to be opened to him, as possession is delivered to the rightful owner. We may apply it to his second coming with glorious power. Lord, open the everlasting door of our souls by thy grace, that we may now receive thee, and be wholly thine; and that, at length, we may be numbered with thy saints in glory.