Meanwhile, Ibrahim George Kheiralla, a Syrian Christian, converted to the Baháʼí Faith, emigrated to the United States and founded the first American Baháʼí community. Initially, he was loyal to ʻAbdu'l-Bahá. With time Kheiralla began teaching that ʻAbdu'l-Baha was the return of Christ, and this was becoming the widespread understanding among the Baháʼís in the United States, despite ʻAbdu'l-Baha's efforts to correct the mistake. Later on, Kheiralla switched sides in the conflict between Baháʼu'lláh's sons and supported Mirza Muhammad Ali. He formed the Society of Behaists, a religious denomination promoting Unitarian Bahaism in the U.S., which was later led by Shua Ullah Behai, son of Mirza Muhammad Ali, after he emigrated to the United States in June 1904 at the behest of his father. Muhammad ʻAlí's supporters either called themselves Behaists  or "Unitarian Baháʼís". From 1934 to 1937, Behai published Behai Quarterly a Unitarian Bahai magazine written in English and featuring the writings of Muhammad Ali and various other Unitarian Bahais. ʻAbdu'l-Bahá's response to determined opposition during his tenure was patterned on Baháʼu'lláh's example and evolved across three stages. Initially, like Baháʼu'lláh, he made no public statements but communicated with his brother Muhammad ʻAlí and his associates directly, or through intermediaries, in seeking reconciliation. When it became clear that reconciliation was not possible, and fearing damage to the community, ʻAbdu'l-Bahá wrote to the Baháʼís explaining the situation, identifying the individuals concerned and instructing the believers to sever all ties with those involved. Finally, he sent representatives to those areas most affected by the problem. The function of these representatives was to explain matters to the Baháʼís and to encourage them to persevere in cutting all contact. Often these chosen individuals would have ʻAbdu'l-Bahá's authority to open up communications with those involved to try to persuade them to return. In Iran, such envoys were principally the four Hands of the Cause appointed by Baháʼu'lláh. When ʻAbdu'l-Bahá died, his Will and Testament explained in some detail how Muhammad ʻAlí had been unfaithful to the Covenant, identifying him as a Covenant-breaker and appointing Shoghi Effendi as leader of the Faith with the title of Guardian.