Finally, be all like-minded, compassionate, loving as brothers, tenderhearted, courteous,
Love as brethren - Margin, “loving to the;” that is, the brethren. The Greek word (φιλάδελφος philadelphos) does not elsewhere occur in the New Testament. It means loving one’s brethren; that is, loving each other as Christian brethren - Robinson, Lexicon. Thus, it enforces the duty so often enjoined in the New Testament, that of love to Christians as brethren of the same family. See the notes at Romans 12:10. Compare Hebrews 13:1; John 13:34.