For this we say unto you by the word of the Lord, that we which are alive [and] remain unto the coming of the Lord shall not prevent them which are asleep.
Berean Study Bible (BSB) - 1 Thessalonians 4:15 >By the word of the Lord, we declare to you that we who are alive and remain until the coming of the Lord will by no means precede those who have fallen asleep.
Textus Receptus (TR) - 1 Thessalonians 4:15 >Τοῦτο γὰρ ὑμῖν λέγομεν ἐν λόγῳ Κυρίου, ὅτι ἡμεῖς οἱ ζῶντες οἱ περιλειπόμενοι εἰς τὴν παρουσίαν τοῦ Κυρίου, οὐ μὴ φθάσωμεν τοὺς κοιμηθέντας.