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

Finally, brothers, we ask and encourage you in the Lord Jesus to live in a way that is pleasing to God, just as you have received from us. This is how you already live, so you should do so all the more.

John Calvin Reformed @genevareformer

1 Furthermore. This chapter contains various injunctions, by which he trains up the Thessalonians to a holy life, or confirms them in the exercise of it. They had previously learned what was the rule and method of a pious life: he calls this to their remembrance. As, says he, ye have been taught.

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

Furthermore then we beseech you, brethren,.... Or request of you in the most kind and tender manner, from real and hearty love and affection for you, and with a view to your good, and the glory of God: and exhort you: or beseech and entreat you.