Skip to content ↓

The Essential: Theology

Resources Collection cover image

I am kicking off a new series of posts today that will go through a list of theological terms to provide a concise and hopefully simple definition for each of them. By “basic” I don’t always mean that the words are commonly used among Christians (or even found in the Bible, for that matter), but that the things they represent comprise some of the central components of Christian faith and practice.

The content for these posts will most often come from one or more authors whose definitions I have found particularly helpful (though I may also provide some summary or synthesis from time to time).

To start, it seems most fitting to begin with a definition of that term that has brought all of the others together—theology.

Millard Erickson, in his massive work Christian Theology, gives a simple but rather comprehensive definition:

[Theology is] that discipline which strives to give a coherent statement of the doctrines of the Christian faith, based primarily on the Scriptures, placed in the context of culture in general, worded in a contemporary idiom, and related to issues of life. (23)

What Erickson simply calls “theology” here is more precisely distinguished by others as systematic theology. Wayne Grudem, a theologian who has also written a massive book on the subject (and pretty much a must-have for your library), makes this distinction, and he defines systematic theology as “any study that answers the question, ‘What does the whole Bible teach us today?’ about any given topic” (21).

Though much shorter, Grudem’s definition is, in essence, the same as Erickson’s; they are both good and useful.

Another even more basic way of saying it, with fewer qualifications, would be to say that theology refers to what we think God thinks about something.

Any other definitions for theology that you would suggest? For further reading, you may want to read about theology-ology.


  • A La Carte Collection cover image

    Weekend A La Carte (February 1)

    A La Carte: The rise of the right-wing exvangelical / A tested faith / Are we alone in the universe? / No one’s born to preach / Associate pastor, it’s good to be second / Why Christians care about submission and authority / and more.

  • Free Stuff Fridays (Boyce College/D3)

    Pastors and Parents are always on the lookout for good discipleship resources for teens. You just might be the person who wins these items for free through the D3/Boyce College Giveaway.

  • Mothering Against Futility

    The Futility of Motherhood

    Life is made up of so much that gives the appearance of being futile. There are so many tasks and responsibilities that we intellectually know to be important but emotionally feel to be fruitless. And if everyone struggles with this to varying degrees, I have it on good authority that mothers are prone to struggle…

  • A La Carte Collection cover image

    A La Carte (January 31)

    A La Carte: Dune and female moral authority / Three lies that separate spouses / Sin makes you stupid / Can a fallen pastor be restored? / Evaluating Trump’s first week of executive actions / A future for the family / Book and Kindle deals / and more.

  • New and Notable Christian Books for January 2025

    As you know, I like to do my best to sort through the new Christian books that are released each month to see what stands out as being not only new, but also particularly notable. I received quite a number of books in January and narrowed the list down to the ones below. I have…

  • A La Carte Collection cover image

    A La Carte (January 30)

    A La Carte: Small injustices / Is it necessary to be a church member? / How to make friends at college / My letter about a transgender teacher / Prayerless theologians / Deepening fellowship / Kindle deals / and more.