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Ligonier Ministries has a list and discussion of their top five commentaries on Joshua. I would not place Davis at #1 and I would include L. D. Hawk (Berit Olam) in the top 5. I would also include Madvig (EBC) ato the runner-up list. In any case, the top five they have listed are:
1. Dale Ralph Davis -- Joshua: No Falling Words (Focus on the Bible, 2000). 2. Richard S. Hess -- Joshua (Tyndale Old Testament Commentaries, 1996). 3. David M. Howard -- Joshua(New American Commentary, 1998). 4. Marten Woudstra -- The Book of Joshua(New International Commentary on the Old Testament, 1981). 5. Trent C. Butler -- Joshua (Word Biblical Commentary, 1983).