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Study 12 of 25

How to Gather and Use Materials

Explanation, argument, illustration, application, and filing

Hands-free narration of this study — good for the car.

Synopsis

Sermon materials fall into four classes: explanation, argument, illustration, and application. Explanation shows that a proposition is reasonable and Scriptural, drawing chiefly from the Bible itself and secondarily from Christian literature such as commentaries and dictionaries. Argument proves, demonstrates, or infers that a proposition is true or false; twelve practical forms are listed, including deduction, induction, cause-to-effect, effect-to-cause, a fortiori, analogy, tradition, testimony, experience, authority, reductio ad absurdum, and process of elimination, each illustrated from Scripture or daily reasoning. Illustrations are 'the windows of sermons,' letting light into abstract truth through one-word illustrations, analogy, anecdote, and story, drawn from the Bible, science, nature, fiction, poetry, history, and current events. Application or persuasion is what distinguishes a sermon from a lecture; the ideal sermon balances all four materials, since all explanation is dry, all argument contentious, and all illustration merely hortatory. The chapter closes with a practical filing system — an alphabetized card file for developing sermon ideas, texts, and illustrations, with separate files for past sermons and for unattached illustrations, to keep preparation from becoming a Friday-night burden.

Key points

  • Sermon materials are four: explanation, argument, illustration, and application.
  • Twelve forms of argument are described, from deduction and induction to testimony and reductio ad absurdum.
  • Illustrations are called 'the windows of sermons,' letting light into abstract truth.
  • Application or persuasion is what distinguishes a sermon from a mere talk or lecture.
  • A balanced sermon uses all four materials; an alphabetized filing system helps gather and use them over time.

Key texts

  • Isaiah 1:18
  • Acts 24:25
  • Galatians 6:7
  • Matthew 6:30
  • Acts 20:31
  • 1 Corinthians 9:27

From the course book

How to Gather and Use Materials · pp. 67-72 (reader pages 67-72) · Open the reader

  • “Someone has said, 'Illustrations are the windows of sermons.'” (p. 70)
  • “It is this material which distinguishes a sermon from a talk or a lecture... The preacher seeks not for simple approval, but for action.” (p. 71)
  • “If the sermon is all explanation, it will be too dry; if it is all argument, it will be too contentious; if it is all illustration, it will be too hortatory.” (p. 71)

Put it into practice

  • Check that every sermon includes explanation, argument, illustration, and application in balance.
  • Match the form of argument to the audience — deduction where the premise is shared, induction or testimony where it is not.
  • Start an alphabetized card file (or digital equivalent) for sermon ideas, texts, and illustrations as they occur.
  1. Comprehension

    1. List the four classes of sermon materials named in the chapter.

  2. Comprehension

    2. What is the principal source of explanation, and what is a secondary source?

  3. Scripture

    3. Define deduction and induction as forms of argument, using the sowing-and-reaping example.

  4. Scripture

    4. Explain the 'a fortiori' argument using Jesus' words in Matthew 6:30.

  5. Doctrinal Clarity

    5. Why does the chapter call illustrations 'the windows of sermons'?

  6. Comprehension

    6. List the sources of illustrations given in the chapter.

  7. Doctrinal Clarity

    7. Why does the chapter say application is what distinguishes a sermon from a lecture?

  8. Contrast

    8. Contrast a sermon that is all explanation, all argument, or all illustration with a balanced sermon.

  9. Application

    9. Describe the filing system suggested for gathering sermon material, and evaluate whether you use anything similar.

  10. Application

    10. Which form of argument (deduction, testimony, analogy, etc.) do you rely on most in your own preaching, and is it well suited to your hearers?