A homily is a commentary that follows a reading of scripture. In Catholic, Anglican, Lutheran, and Eastern Orthodox Churches, a homily is usually given during Mass at the end of the Liturgy of the Word...
. A preacher is distinct from a theologian by focusing on the communication rather than the development of doctrine
Doctrine is a codification of beliefs or a body of teachings or instructions, taught principles or positions, as the body of teachings in a branch of knowledge or belief system...
. Others see preaching and theology as being intertwined. Preaching is not limited to religious views, but it extends to moral and social world-views as well.
Preachers are common throughout most cultures.