John Youl's ordination took place in May 1800 at the Congregational chapel in
Portsea. He then departed for the Pacific aboard the
Royal Admiral, a long-distance mail ship of the
East India Company transporting approximately 300 convicts to the penal colony at
Sydney. Upon arrival in Sydney, Youl was delayed for three months, during which he assisted Reverend
Samuel Marsden and preached in various settlements including
Toongabbie,
Kissing Point, and the
Hawkesbury. John Youl reached
Tahiti on July 10, 1801, accompanied by
James Elder,
John Davies, and other missionaries. The group operated under the protection of
Pomare I and later
Pomare II. Since their arrival in March 1797, the English missionaries faced considerable challenges in their efforts to convert the Tahitian population to Christianity, primarily due to their lack of proficiency in the local language. This linguistic barrier hindered the effective transmission of the evangelical message. Nevertheless, despite these impediments, the missionaries remained steadfast in their spiritual commitment. On April 20, 1801, the English missionaries in Tahiti became aware of a conflict between
Pōmare I and the inhabitants of Atehuru, a district situated on the western coast of the island. The dispute originated from the alleged theft, by individuals from Atehuru, of a sacred object from Pare: the image of the principal deity
'Oro. While tensions surrounding this event continued to shape local political dynamics, the missionaries remained focused on their evangelical efforts. Their linguistic progress soon yielded tangible results. The first missionary sermons delivered without an interpreter took place on August 16, 1801, and the first written text in a Polynesian language appeared on October 8, 1801. In late March 1802, a major assembly was convened in Atehuru. During this gathering, Otoo (later
Pōmare II), having previously demanded the return of the image of 'oro and been refused, seized the object by force. This action provoked a violent rebellion and resulted in considerable bloodshed. The idol of 'Oro was subsequently recaptured by the people of Atehuru during a night assault on
Pōmare I and his son Otoo (Pomare II) in
Tautira, at a time when they were engaged in traditional religious ceremonies. In response, an expedition was organized by Captain Bishop, accompanied by a contingent of twenty-four English seamen, and
Pōmare I with his troops, in an effort to subdue the Atehuruans. The missionary
James Elder took part in this punitive expedition in the capacity of a surgeon. The conflict eventually came to an end on July 4, 1802, following the death of Rua, the principal leader of the Atehuru faction, who had been supported by other tribes from Tahiti’s western coast. The missionaries later reflected that had it not been for what they interpreted as divine intervention, namely the unexpected arrival of Captain Bishop of the
Venus and his crew on the island and the wrecking of the
Norfolk commanded by Captain House near
Matavai Bay, they along with Pomare I,
Otoo, and their followers would likely have been expelled from Tahiti and might even have faced mortal danger. On March 8, 1805,
John Jefferson and
John Davies convened a meeting to establish a standardized Tahitian alphabet, laying the groundwork for an English–Tahitian dictionary. By 1806, the dictionary contained approximately 2,000 words, primarily compiled by
Henry Nott and John Davies. In October 1806, the opening of an evening school enabled Davies to transcribe a small syllabary, which was sent to London on May 3, 1807. Printed in 1812, it marked a major milestone in the modern history of Tahiti and the Pacific, as the first book ever published in an Oceanic language. John Youl worked in
Tahiti until 1807, contributing to early efforts to translate religious texts and establish Christian teachings in the
Society Islands. His experience in Polynesia shaped his understanding of cross-cultural ministry and prepared him for future service in
Australia. Although Youl had already departed Tahiti, by the end of 1815 the London Missionary Society's efforts culminated in the abandonment of
idolatry,
human sacrifice, and
infanticide, and in the widespread adoption of
Christianity across the
Society Islands. ==Arrival in Australia and ministry in New South Wales==