Verse 13. - He that hath an ear, let him hear what the Spirit saith unto the Churches (see on Revelation 2:7). Of the condition of the Church in Philadelphia we know nothing from Holy Writ, except what is contained in the passage before us. But its comparative immunity from trouble and destruction, and its continued existence to the present day (see on vers. 7-13, "Philadelphia"), render it probable that the message of the apostle was not without some effect. Thus Gibbon writes: "In the loss of Ephesus the Christians deplored the fall of the first angel, the extinction of the first candlestick, of the Revelation; the desolation is complete; and the Temple of Diana or the Church of Mary will equally elude the search of the curious traveller. The circus and three stately theatres of Laodicea are now peopled with wolves and foxes; Sardis is reduced to a miserable village; the God of Mahomet, without a rival or a Son, is invoked in the mosques of Thyatira and Pergamos, and the populousness of Smyrna is supported by the foreign trade of the Franks and Armenians. Philadelphia alone has been saved by prophecy or courage" ('Decline and Fall,' c). 64.

3:7-13 The same Lord Jesus has the key of government and authority in and over the church. He opens a door of opportunity to his churches; he opens a door of utterance to his ministers; he opens a door of entrance, opens the heart. He shuts the door of heaven against the foolish, who sleep away their day of grace; and against the workers of iniquity, how vain and confident soever they may be. The church in Philadelphia is commended; yet with a gentle reproof. Although Christ accepts a little strength, yet believers must not rest satisfied in a little, but strive to grow in grace, to be strong in faith, giving glory to God. Christ can discover this his favour to his people, so that their enemies shall be forced to acknowledge it. This, by the grace of Christ, will soften their enemies, and make them desire to be admitted into communion with his people. Christ promises preserving grace in the most trying times, as the reward of past faithfulness; To him that hath shall be given. Those who keep the gospel in a time of peace, shall be kept by Christ in an hour of temptation; and the same Divine grace that has made them fruitful in times of peace, will make them faithful in times of persecution. Christ promises a glorious reward to the victorious believer. He shall be a monumental pillar in the temple of God; a monument of the free and powerful grace of God; a monument that shall never be defaced or removed. On this pillar shall be written the new name of Christ; by this will appear, under whom the believer fought the good fight, and came off victorious.He that hath an ear, let him hear,.... See Gill on Revelation 2:7.