The daily program is what airs on the radio during our 25-minute broadcast slot. It consists of an introduction, a single sermon (or part of a sermon if it is too long to fit), and a conclusion that promotes our current resource. A sermon is a 20–45-minute complete sermon. Sermons are grouped into series generally by Scripture or topic. A series may be comprised of many sermons that cover a topic extensively or work sequentially through a book of the Bible. Not all sermons are part of a series. Both single sermons and complete series can be downloaded for free from the website. If Alistair is preaching through a particular book of the Bible, it will typically be released as a series upon its completion.