Dug Down Deep by Joshua Harris is an excellent book on doctrine. He talks about how we need to be like the wise man and have our foundation like a rock and not like the foolish man who built his house on the sand. Joshua explains the doctrines that our foundational to our Christian faith. There were some things that I disagreed with him on (speaking in tongues and the gift of prophecy), but overall this is an excellent book about doctrine. This book would be great to disciple a new believer with. And it's also a great book for seasoned Christians to be reminded about these core doctrines of the Christian faith.
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