John Christopher Thomas Books

Passover Pentecost and Parousia

By R. D. Moore, John Christopher Thomas, Steven Land

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1 John 2 John 3 John

By John Christopher Thomas

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Book of the Twelve

By Lee Roy Martin, John Christopher Thomas

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Toward a Pentecostal ecclesiology

By John Christopher Thomas

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The Devil, Disease, and Deliverance

By John Christopher Thomas

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The relationships between the Devil and disease, sickness and sin, healing and forgiveness, and exorcism and deliverance form an intriguing and controversial set of issues. This monograph brings so...

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.