David Guzik Books

Dedication Through Fasting and Prayer

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Verse-by-Verse Commentary on Ezekiel The Prophet in Exile Ezekiel's ministry as a prophet began when the Kingdom of Judah was ready to be conquered by a mighty empire. Eventually he was among the J...

Psalms 1-40

By David Guzik

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David Guzik's verse by verse commentary on Psalms 1 through 40.

Matthew

By David Guzik

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The Gospel of Matthew provides the perfect bridge between the Old and New Testaments, powerfully showing who Jesus is, how He lived, and His teaching among men. Writing as a Jewish man to readers f...

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.