Revelation 3:7

This is the Key of David which the Inspired Word is teaching, this Word, who is uncreated in the bosom of the Father, incarnate in the Virgin's womb, inspired in your heart by faith. He penetrates angelic and human minds, and coming into them, He …

And it was said to the Angel of Philadelphia, who was the sixth, "Thus says the holy one, the true one, he who has the key of David, he who opens and no one shuts, and who shuts and no one opens: I know thy …

His kingdom is called "the key of David," for this is a symbol of authority. And, moreover, the Holy Spirit is the key of the book of the Psalms and of every prophecy, for through him the treasures of knowledge are opened. He received the …

And to the angel of the church in Philadelphia write. Philadelphia is interpreted as brotherly love, which is promised the open door of the kingdom and to be loved by the Lord.

These things says the holy one, the true one, who has the key of David. That is, the royal authority, whether born from the lineage of David or because the prophecy of David was revealed through the dispensation of Christ.

Who opens and no one shuts, etc. The secrets of the divine law are revealed to the faithful by the power of Christ alone and are closed to the unfaithful.

And to the angel of the church of Philadelphia, write: These things saith the Holy One and the true one, he that hath the key of David; he that openeth, and no man shutteth; shutteth, and no man openeth: Behold, I have given before thee …

And to the angel of the church in Philadelphia write,.... Of the city of Philadelphia; see Gill on Rev 1:11; According to the Apostolical Constitutions (m), one Demetrius was ordained bishop of this church by the Apostle John; but this is not to be depended on; nor is it known who this angel was: however, certain it is there was a church in this place in the "second" century, in the times of Ignatius, who wrote an epistle to it, and which then had a bishop or pastor over it, whom he mentions (n), though not his name.

The holy one, the true one - Two great and glorious names He that hath the key of David - A master of a family, or a prince, has one or more keys, wherewith he can open and shut all the doors of his house or palace. So had David a key, a token of right and sovereignty, which was afterward adjudged to Eliakim, Isaiah xxii, 22.

And to the angel of the church in Philadelphia - See the notes on Rev 1:20. These things saith he that is holy - This refers undoubtedly to the Lord Jesus. The appellation holy, or the holy one, is one that befits him, and is not infrequently given to him in the New Testament, Luk 1:35; Act 2:27; Act 3:14. It is not only an appellation appropriate to the Saviour, but well adapted to be employed when he is addressing the churches.

None but God is absolutely holy (Greek, "hagios," separate from evil and perfectly hating it). In contrast to "the synagogue of Satan" (Re 3:9). true--Greek, "alethinos": "VERY God," as distinguished from the false gods and from all those who say that they are what they are not (Re 3:9): real, genuine.

He that is holy - In whom holiness essentially dwells, and from whom all holiness is derived. He that is true - He who is the fountain of truth; who cannot lie nor be imposed on; from whom all truth proceeds; and whose veracity in his Revelation is unimpeachable. He that hath the key of David - See this metaphor explained, Mat 16:19. Key is the emblem of authority and knowledge; the key of David is the regal right or authority of David. David could shut or open the kingdom of Israel to whom he pleased. He was not bound to leave the kingdom even to his eldest son. He could choose whom he pleased to succeed him. The kingdom of the Gospel, and the kingdom of heaven, are at the disposal of Christ. He can shut against whom he will; he can open to whom he pleases. If he shuts, no man can open; if he opens, no man can shut. His determinations all stand fast, and none can reverse them. This expression is an allusion to Isa 22:22, where the prophet promises to Eliakim, under the symbol of the key of the house of David, the government of the whole nation; i.e., all the power of the king, to be executed by him as his deputy; but the words, as here applied to Christ, show that He is absolute.