Journal of Teologi Cultivation (JTC) Journal of Religion and Christian Theological Education, published by the Institut Agama Kristen Negeri (IAKN) Tarutung, Indonesia, which contains articles on scientific research in the fields of Theology, Missiology, Theology Education and Teaching, History of Theology, Homiletics, Church Science, Catechetics, and Cultivation. The JTC is published biannual in July and December.