4:15 {13} For this we say unto you by the {f} word of the Lord, that {g} we which are alive [and] remain unto the coming of the Lord shall not prevent them which are asleep.
(13) The manner of the resurrection will be in this way: the bodies of the dead will be as it were raised out of sleep at the sound of the trumpet of God. Christ himself will descend from heaven. The saints (for he is referring to them) who will then be found alive, together with the dead who will rise, will be taken up into the clouds to meet the Lord, and will be in perpetual glory with him.
(f) In the name of the Lord, as though he himself spoke to you.
(g) He speaks of these things, as though he should be one of those whom the Lord will find alive at his coming, because the time of his coming is uncertain: and therefore every one of us ought to be in such a readiness, as if the Lord were coming at any moment.
4:15 For this we say. He now explains how it will be the Lord's coming.
We which are alive [and] remain. We who are on the earth when the Lord comes, will not precede those who died in the Lord to meet him.
4:15 By the word of the Lord - By a particular revelation. We who are left - This intimates the fewness of those who will be then alive, compared to the multitude of the dead. Believers of all ages and nations make up, as it were, one body; in consideration of which, the believers of that age might put themselves in the place, and speak in the person, of them who were to live till the coming of the Lord. Not that St. Paul hereby asserted (though some seem to have imagined so) that the day of the Lord was at hand.
4:13-18 Here is comfort for the relations and friends of those who die in the Lord. Grief for the death of friends is lawful; we may weep for our own loss, though it may be their gain. Christianity does not forbid, and grace does not do away, our natural affections. Yet we must not be excessive in our sorrows; this is too much like those who have no hope of a better life. Death is an unknown thing, and we know little about the state after death; yet the doctrines of the resurrection and the second coming of Christ, are a remedy against the fear of death, and undue sorrow for the death of our Christian friends; and of these doctrines we have full assurance. It will be some happiness that all the saints shall meet, and remain together for ever; but the principal happiness of heaven is to be with the Lord, to see him, live with him, and enjoy him for ever. We should support one another in times sorrow; not deaden one another's spirits, or weaken one another's hands. And this may be done by the many lessons to be learned from the resurrection of the dead, and the second coming of Christ. What! comfort a man by telling him he is going to appear before the judgment-seat of God! Who can feel comfort from those words? That man alone with whose spirit the Spirit of God bears witness that his sins are blotted out, and the thoughts of whose heart are purified by the Holy Spirit, so that he can love God, and worthily magnify his name. We are not in a safe state unless it is thus with us, or we are desiring to be so.