Mining the Word: How Bible Lexicons Like BDAG and BDB Transform Your Sermon Preparation

October 4, 20269 min read

A practical and pastoral guide to using Bible lexicons—BDAG for Greek and BDB for Hebrew—as essential tools for biblical word study in sermon preparation, with concrete examples from Philippians, Psalms, and Matthew.

Mining the Word: How Bible Lexicons Like BDAG and BDB Transform Your Sermon Preparation

By the Ezra Editorial Team

Every pastor who stands in the pulpit on Sunday morning knows the weight of that moment. The congregation is not merely looking for inspiring sentences — they are looking for the Word of God accurately handled, faithfully explained, and wisely applied. A biblical word study for sermon preparation is not a detour from that task; it is the task. And the tools that make it possible — lexicons like BDAG (A Greek-English Lexicon of the New Testament and Other Early Christian Literature) and BDB (Brown-Driver-Briggs Hebrew and English Lexicon) — are among the most valuable instruments any minister can place on his desk.

This article is a practical and pastoral guide to using Bible lexicons well. We will trace the interpretive principle, engage a passage in its original language, follow the word into its redemptive significance, and see how the discipline of lexical study forms both preacher and congregation.

What Is a Bible Lexicon, and Why Does It Matter for Preaching?

What is a Bible lexicon, and why should every pastor use one in sermon preparation?

A Bible lexicon is a scholarly dictionary of the original languages of Scripture — Greek for the New Testament and Hebrew (with some Aramaic) for the Old. Unlike a general dictionary, a lexicon organizes words by their root form (called a lemma), provides the range of meanings the word carries across its usage in literature, and often cites examples from ancient texts that illuminate how native speakers would have heard it. BDAG — the gold standard for New Testament Greek — catalogues each word's semantic range, cites usage from the Septuagint, classical authors, and early Christian writings, and distinguishes the specific sense a term carries in each biblical context. That precision is what distinguishes a lexicon from a concordance or a commentary, and it is exactly what rigorous biblical preaching demands.

The hermeneutical principle behind lexical study is simple but foundational: the meaning of any biblical text is controlled by the language in which it was written, not by how readers in another era have assumed it reads. When Paul writes in Philippians 4:7 that "the peace of God…will guard your hearts and your minds in Christ Jesus" (ESV), the English word "guard" is serviceable — but it obscures something precise. The Greek verb Paul uses is φρουρέω (phroureo). BDAG (3rd ed., p. 1066) defines this as "to keep under guard, to protect by means of a military guard" — specifically the image of a garrison of soldiers stationed at a gate to prevent both unauthorized entry and unauthorized exit. Paul is not saying that peace will comfort your heart. He is saying that it will stand watch over your heart like a Roman sentinel. That distinction shapes the sermon entirely.

Reading the Text in Its Historical and Grammatical Setting

The interpretive method known as grammatical-historical exegesis — the foundation of sound hermeneutics — insists that a passage's meaning is anchored in what it meant to its original audience in its original language, culture, and moment. Lexical study is the grammatical half of that method brought to life.

Consider Psalm 23:6, where the shepherd-psalmist declares that "goodness and mercy shall follow me all the days of my life." The Hebrew word translated "mercy" here is חֶסֶד (chesed). This word appears more than 240 times in the Old Testament and is one of the richest theological terms in the entire Hebrew canon. BDB (p. 338) defines chesed as "goodness, kindness, faithfulness; specifically in covenantal contexts, the loyal love that a superior shows to an inferior in fulfillment of covenant obligations." It is not sentimentality. It is not a feeling. It is God's covenant-binding commitment — His binding oath of faithfulness to the one with whom He has entered into relationship.

That definition reshapes the psalm. David is not saying that good things keep happening to him. He is saying that God's covenant-loyalty itself — the same attribute by which God redeemed Israel from Egypt (Exodus 15:13) and ratified His promises to Abraham (Psalm 98:3) — is pursuing him. The word "follow" in the Hebrew (radaph, meaning to pursue or chase) reinforces the image: chesed and emet (faithfulness) are not passive companions but active forces dispatched by God on behalf of His beloved. Knowing this changes what a pastor says in the pulpit — and it changes what a congregation hears.

The Redemptive Significance of Lexical Precision

Why does this precision matter theologically? Because every word of Scripture is part of a coherent, cumulative story — the story of God redeeming humanity through the atoning work of His Son. When preachers blur the edges of the language, they blur the edges of the story.

The word λύτρον (lytron), translated "ransom" in Matthew 20:28, is a case in point. BDAG (p. 605) defines it as "a payment to free someone from an obligation, captivity, or punishment — a price paid for release." The term was used in the first-century Greco-Roman world for the coin that purchased a slave's freedom, for the payment made to release a prisoner of war, and for the redemption price in Jewish property law. When Jesus says He came "to give His life as a lytron for many," He is not using a vague spiritual metaphor. He is invoking a transaction — a real price for a real debt owed by real captives. The doctrine of substitutionary atonement is not imposed on this text from outside; it is embedded in the lexical choice Jesus made when He spoke it.

This is the theological payoff of serious word study: it confirms that God's Word is not loosely assembled religious literature but a precisely calibrated revelation of redemptive truth.

The Ethical Discipline of Handling Words Carefully

What is the most common mistake pastors make when doing biblical word studies?

The most common error is what scholars call the "etymological fallacy" — assuming that a word's root or origin determines its meaning in every context. For example, the Greek word εκκλησία (ekklesia), translated "church," derives from ek (out of) and kaleo (to call), leading some preachers to define the church as "the called-out ones." While this etymology is not false, it is insufficient: BDAG (p. 303) notes that by the New Testament era, ekklesia had simply come to mean "an assembly of people gathered for a specific purpose — in early Christian usage, the community of believers, local or universal." The word had shed its etymological weight through ordinary usage. A pastor who preaches that "ekklesia means you are called out of the world" is not wrong to say that, but the meaning comes from theology, not etymology. Good lexical work knows the difference.

This distinction matters ethically as well as academically. The pastor's word study is not a performance of erudition — it is a stewardship of the congregation's trust. When a minister says "the Greek says...," the congregation rightly assumes that what follows is accurate. The ethical weight of the pulpit demands that it be so. Handling the biblical languages with carefulness is not optional; it is a matter of faithfulness to the God whose Word is being declared.

Practically, this means that every preacher should cultivate a few reliable lexical habits: identifying the specific lemma behind a key English word, checking BDAG or BDB for its semantic range, noting which sense applies in the context of the passage, and cross-referencing with how the same author uses the same word elsewhere (the analogy of Scripture). This workflow is not reserved for seminary graduates. With modern tools — Strong's Concordance, digital platforms like Logos or Accordance, and voice-based Bible study tools — any pastor can develop it.

A Practical Framework for Lexical Word Study in Sermon Preparation

Identify your key word. As you read the passage prayerfully, ask: which word carries the most theological weight? It may be a noun (covenant, grace, law), a verb (justify, redeem, sanctify), or an adjective that modifies the central subject.
Find the original lemma. Use an interlinear Bible, Strong's Concordance, or a digital tool to locate the exact Greek or Hebrew root. Do not work from a transliteration alone — the lemma (base form) is what the lexicon organizes by.
Consult BDAG (Greek) or BDB/HALOT (Hebrew). Read the full entry, not just the first gloss. Lexicons like BDAG list multiple senses numbered and lettered; find which sense applies to your specific verse. The editors will often point you there with example sentences.
Trace the word across the biblical corpus. How does this author use it elsewhere? Is your reading consistent with his usage? Does the Old Testament background of a New Testament term shed additional light?
Let precision serve proclamation. The goal is not to impress the congregation with Greek but to give them the most accurate picture of what God said. Translate the lexical insight into plain pastoral language. "The word behind our English 'ransom' was the price paid to free a slave — and that is exactly what Christ paid for you."

The Preacher Who Digs Deep

The great preachers of church history — Charles Spurgeon, John Calvin, Martyn Lloyd-Jones, Charles Simeon — shared one discipline above most others: they took the language of Scripture seriously. They believed that the precise words God chose in the original tongues matter, and that reverence for the text demands rigorous, searching study.

Lexical study is one of the primary ways that reverence becomes practice. When a pastor opens BDAG or BDB, he is not merely doing academic homework. He is saying to his congregation, in practice if not in words: the precise words God chose matter, and I am going to work until I understand them. That posture forms a preacher over a lifetime. It also forms the congregation that watches him model it.

Studying the Text Alongside Ezra

As you take your sermon preparation deeper into the original languages, Ezra can walk that journey with you. Whether you are working through a Greek verb's semantic range in Paul's letters or tracing a Hebrew covenant word across the Old Testament, Ezra brings scholarly lexical resources into natural, conversational Bible study — so that the tools of the study become part of the rhythm of pastoral life, not an interruption of it. The Word deserves that kind of careful attention, and so do the people who will hear it preached.

Scripture quotations are from the ESV® Bible unless otherwise noted.