The Apostle Paul
1 Thessalonians 4:5BSB·traditional attribution

not in lustful passion like the Gentiles who do not know God;

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. An exhortation to abound in holiness, to abound more and more in that which is good, Th1 4:1, Th1 4:2. We may observe, 1. The manner in which the exhortation is given - very affectionately. The apostle entreats them as brethren; he calls them so, and loved them as such.

Commenting on 1 Thessalonians 4:1-8

John Gill Reformed Baptist @doctorgill

Not in the lust of concupiscence,.... Or "passion of lust"; for the mere gratifying and indulging of that; for a man so to possess his vessel, is to cherish the sin of concupiscence, the first motions of sin in the heart, by which a man is drawn away, and enticed; to blow up the flame of lust, and to make provision for the flesh to...

Albert Barnes Presbyterian @notesbybarnes

Verse 5. Not in the lust of concupiscence. In gross gratifications. Even as the Gentiles. This was, and is, a common vice among the heathen. ; ; , and the reports of missionaries everywhere. Which know not God. , ; . (*) "concupiscence" "not given up to lustful passions" (a) "Gentiles"