Timothy J. Keller Books

Generous Justice: How God's Grace Makes Us Just

By Timothy Keller, Timothy J. Keller

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The Prodigal Prophet

By Timothy J. Keller

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The Reason for God

By Timothy J. Keller

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Counterfeit gods

By Timothy J. Keller

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Walking with God through pain and suffering

By Timothy J. Keller

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The problem of pain is a perennial one; and for those who undergo particular sufferings it can often be the largest obstacle for trusting in a good and loving God. If such a God exists, why is ther...

Movements of the Gospel

By Brandon J O Brien, Timothy J. Keller, Stephan Pues

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How to Reach the West Again

By Timothy J. Keller

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God's Wisdom for Navigating Life

By Timothy J. Keller, Timothy Keller With Kathy Keller

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From pastor and New York Times bestselling author Timothy Keller comes a beautifully packaged, yearlong daily devotional based on the Book of Proverbs.Proverbs is God’s book of wisdom, teachi...

Dioses Falsos

By Timothy J. Keller

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Iglesia centrada

By Timothy J. Keller

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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.