Excerpts from Books and Wikipedia
"Bahá'u'lláh had never studied Arabic; He had not had a tutor or teacher, nor had He entered a school. Nevertheless, the eloquence and elegance of His blessed expositions in Arabic, as well as His Arabic writings, caused astonishment and stupefaction to the most accomplished Arabic scholars, and all recognized and declared that He was incomparable and unequaled. . . . For fifty years Bahá'u'lláh faced His enemies like a mountain: all wished to annihilate Him and sought His destruction. A thousand times they planned to crucify and destroy Him, and during these fifty years He was in constant danger. . . . Christ, in His blessed day, in reality only educated eleven men: the greatest of them was Peter, who, nevertheless, when he was tested, thrice denied Christ. In spite of this, the Cause of Christ subsequently permeated the world. At the present day Bahá'u'lláh has educated thousands of souls who, while under the menace of the sword, raised to the highest heaven the cry . . . Finally, we must be just and acknowledge what an Educator this Glorious Being was, what marvelous signs were manifested by Him, and what power and might have been realized in the world through Him."