In the Bible God uses ordinary human language rather than a technically precise jargon. He does not include all the technical, pedantic details that would interest a scholar. By doing so, he speaks clearly to ordinary people, not merely to scholars with advanced technical knowledge. What God says is not exhaustive, but it is sufficient to save us and to provide a sure guide for our life.
Hence, the ordinary, humble readers of the Bible do all right. Paradoxically, scholars and would-be scholars can easily get into trouble by overestimating the degree of technical or pedantic precision in the Bible. They will then fall into mistakes that an ordinary reader of the Bible would not make. Therefore, if we are engaged in more scholarly theological reflection, we must become self-conscious about our language. Of course, most scholars do not explicitly do theology on the basis of some fully developed philosophy of language. Mistakes made without an explicit philosophy are nevertheless mistakes. And such mistakes do occur. In fact, mistakes, obscurities, inadequacies, and infelicities related to language occur with considerable frequency in our day, even in reputable, scholarly writings of theology.
Those of us who are going deeper into theology, which is a good thing. However I’ve read stories of elderly people who have suffered greatly and who love God, love reading their Bible, and have been sanctified over the course of their lives more than many who make a living as a theologian. We shouldn’t think too highly of ourselves for knowing more terms and doctrine than some others. There will be people in heaven receiving their praise from God who never knew the difference between Calvinism and Arminianism.
Poythress is also saying that we shouldn’t make our theological terms too narrow (or too broad), along with concepts in Scripture. But that really needs the context of the book to be better understood.
We should also be aware that just because somebody is a famous scholar (if there is such a thing), that doesn’t automatically mean they’re right, whether it comes to theology, doctrine, exegesis, or original languages. (I’ve been reading more and more about the latter.) It seems that the less we know of a subject, the more we will trust others, especially if it seems to make sense at first (Proverbs 18:17).
For those of us who are more well versed, or becoming so, with theology:
“It is impossible, while Christ is in the eye of our faith as proposed in the gospel, but that we shall labor to be like Him and greatly love Him. Neither is there any way for us to attain to either of these, which are the great concerns of our souls (to be like to Christ and to love Him) but by a constant view of Him and His glory by faith; which powerfully and effectually works them in us. All the doctrinal knowledge which we have of Him is useless, all the view we have of His glory is but fancy, imagination, or superstition, which are not accompanied with this transforming power. And that which is wrought by it is the increase and vigor of all grace; for therein alone our conformity to Him consists. Growth in grace, holiness, and obedience is a growing like Christ; and nothing else is so.”
–John Owen, The Glory of Christ
And this comes by God’s Word.
“If we satisfy ourselves in mere notions and speculations about the glory of Christ as doctrinally revealed unto us, we shall find no transforming power or efficacy communicated unto us thereby. But when, under the conduct of that spiritual light, our affections do cleave unto him with full purpose of heart, our minds are filled with the thoughts of him and delight in him, and faith is kept up unto its constant exercise in trust and affiance on him, — virtue will proceed from him to purify our hearts, increase our holiness, strengthen our graces, and to fill us sometimes ‘with joy unspeakable and full of glory.'”
Regarding the text that I made italic–I’ve been using an hourly chime on my phone–and changing it when I don’t hear it anymore–for memorizing Scripture. But I have slowed down with that or I won’t be able to keep up with it as far as reviewing. So I also use it to remind me to pray during downtime, meditate on Scripture and God, or simply be aware of His presence if I’m busy with something (1 Chronicles 16:11). As John Owen has written, what better way is there to spend our thinking time than thinking of Him?
Search for the LORD and his strength.
Always seek his presence.
1 Chronicles 16:11 GW