In 1802, when Kam's father and mother died, he left the leather business and worked at the National Court.
In March 1815, he arrived in Ambon,[1] and immediately started working with congregations in the Maluku Islands which had long been abandoned by the Dutch.
In the Maluku Islands, Kam perform all the duties of a pastor, such as preaching, visiting the congregations, arbitrate disputes and quarrels, and served sacraments.
He is also active in developing Christian readings, like the Bible, Psalms, Catechism, and sermons for congregations without ministers or teachers.
Shortly after Kam arrived in Ambon, he married a woman of Indo-Dutch extraction, Sara Maria Timmerman, who remained at his side until the end of his life.