John the Apostle
1 John 3:11ESV·traditional attribution

For this is the message that you have heard from the beginning, that we should love one another.

John Calvin Reformed @genevareformer

10 Whosoever doeth not righteousness. To do righteousness and to do sin, are here set in opposition the one to the other. Then, to do righteousness is no other thing than to fear God from the heart, and to walk in his commandments as far as human weakness will permit; for though righteousness in a strict sense is a perfect keeping of the law, from...

Matthew Henry Presbyterian @wholebiblehenry

The apostle, having intimated that one mark of the devil's children is hatred of the brethren, takes occasion thence, I. To recommend fraternal Christian love, and that from the excellence, or antiquity, or primariness of the injunction relating thereto: And this is the message (the errand or charge) which you heard from the beginning (this came among the principal parts of practical Christianity), that we...

Commenting on 1 John 3:11-13

John Gill Reformed Baptist @doctorgill

For this is the message,.... Sent from God by Christ, or what he in his ministry declared, and is the commandment which was so frequently urged by him, Joh 13:34; that ye have heard from the beginning; of the preaching of the Gospel to them, and of their conversion; see Jo1 2:7; that we should love one another; to which the command of Christ, the...