" .. ye have been forbidden to engage in contention and conflict."

“Revile ye not one another. We, verily, have come to unite and weld together all that dwell on earth. Unto this beareth witness what the ocean of Mine utterance hath revealed amongst men, and yet most of the people have gone astray. If anyone revile you, or trouble touch you, in the path of God, be patient, and put your trust in Him Who heareth, Who seeth. He, in truth, witnesseth, and perceiveth, and doeth what He pleaseth, through the power of His sovereignty. He, verily, is the Lord of strength, and of might. In the Book of God, the Mighty, the Great, ye have been forbidden to engage in contention and conflict. Lay fast hold on whatever will profit you, and profit the peoples of the world. Thus commandeth you the King of Eternity, Who is manifest in His Most Great Name. He, verily, is the Ordainer, the All-Wise.”

-Bahá'u'lláh, Epistle to the Son of the Wolf, p. 24