The First Epistle of St. Paul to the Thessalonians (Author Paul)
4:1de cetero ergo fratres rogamus vos et obsecramus in Domino Iesu ut quemadmodum accepistis a nobis quomodo vos oporteat ambulare et placere Deo sicut et ambulatis ut abundetis magis
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.