Practical theology is the practical application of theology to everyday life. Richard Osmer explains that the four key questions and tasks in practical theology are:
Practical theology consists of several related sub-fields: applied theology (such as missions, evangelism, pastoral psychology or the psychology of religion), church growth, administration, homiletics, spiritual formation, pastoral theology, spiritual direction, spiritual theology, political theology, theology of justice and peace and similar areas. It also includes advocacy theology, such as the various theologies of liberation (of the oppressed in general, of the disenfranchised, of women, of immigrants, of children, and black theology). Practical theology may also include branches such as the theology of relational care, which describes Christians caring for others as Christ cared for the poor. Christian Boyd also writes about a new perspective of practical theology called "convergent practical theology" which has emerged out of the combined studies and practice of missiology with organizational development since the publication of "Missional Church" by Darrell Guder et al.