Christian homiletics

thumb|A Roadside Sermon by John Pettie

thumb|"The Apostles Going Forth to Preach" (Très Riches Heures du Duc de Berry, ) '''''' (from , ) is a Greek word used in the New Testament for 'proclamation' (see Luke 4:18-19, Romans 10:14, Gospel of Matthew 3:1). It is related to the Greek verb (), literally meaning 'to cry or proclaim as a herald' and being used in the sense of 'to proclaim, announce, preach'. Amongst biblical scholars, the term has come to mean the core of the early church's teaching about Jesus.

A homily (from Greek ὁμιλία, homilía) is a commentary that follows a reading of scripture, giving the "public explanation of a sacred doctrine" or text. The works of Origen and John Chrysostom (known as Paschal Homily) are considered exemplary forms of Christian homily.

A postil or postill (; ) was originally a term for Bible commentaries. It is derived from the Latin ("after these words from Scripture"), referring to biblical readings. The word first occurs in the chronicle (with reference to examples of 1228 and 1238) of Nicolas Trivetus, but later it came to mean only homiletic exposition, and thus became synonymous with the homily in distinction from the thematic sermon. Finally, after the middle of the fourteenth century, it was applied to an annual cycle of homilies.

A homiliarium or homiliary is a collection of homilies, or familiar explanations of the Gospels.

proselytizing in public places not specified for religious activity

idiomatic expression of signs of God's wrath in the Hebrew Bible (Old Testament) and the New Testament.