Baptist Sunday School Superintendent Receives the Holy Ghost and Speaks in Tongues

An unnamed man, who served as the superintendent of a General Baptist Sunday School and had been investigating the gospel of the Latter-day Saints, became deeply exercised after a meeting. He returned home and prayed earnestly for a manifestation regarding the truth of the doctrine, covenanting to be faithful if it were true. That night, the power of the Holy Ghost came upon him so powerfully that it banished sleep from his system. He was heard speaking in the Greek language, specifically the words 'Eureka! Eureka!', despite having no knowledge of the Greek language. This event occurred in England around the early 1840s.

Fuller account of this event (as retold in The Latter-day Saints' Millennial Star, Vol. 7, No. 11, 1 June 1846, p. 166):

One who had accompanied us in attending the meetings almost from the beginning, who was well known for his piety and humility as superintendent of the General Baptist Sunday School, being upon one occasion, on returning home from a meeting, was led most earnestly to pray that God would make it manifest unto him, whether the principles as taught by the Saints were of him or not, covenanting most earnestly that he would be faithful with his life if they were so, and on the contrary, seek to be enabled to reject them if false. His own statement was, that shortly after he had risen from his knees and sat upon his bed, the power of the Holy Ghost came upon him, and he was led to magnify God. The joy and satisfaction consequent to him, were such as to banish sleep from his system; he had received of an influence whose nature was life eternal, and the weariness of the body was forgotten in the almost overwhelming joy of the soul. We subsequently heard him under the same influence, and remember well that he spoke in the Greek tongue, in the words of Archimedes, who, when overjoyed at making some fresh discovery, ran into the streets of Athens, exclaiming, Eureka! Eureka! I have found it! I have found it! Perhaps a sceptic might say that such a thing was very easy; but we would state for the satisfaction of our readers that the young man was as ignorant of Greek as he possibly could be.