From the Crossway Publishing blog:
Greg Gilbert’s What is the Gospel? is available for free this month on Amazon’s Kindle and in the iBook store! But just as the gospel isn’t only for us individually, our desire is that this content would reach well beyond those of you who download it for free!
I downloaded it onto the Kindle app on my iPhone. The iBook store app on my phone doesn’t seem to be able to locate the book. Kindle editions can be downloaded and read on computers.
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