John Wesley on 1 Thessalonians 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.