I found this commentary useful and at these prices well worth purchasing if one was preaching and/or teaching through a book. It provides nice information in an easy to read and follow format. The Christian Book Distributor ereader is one of the best I have seen. I like the cross platform capacity and ease of use. The only drawback is that you must have an internet connection which are usually easy to find especially wifi but it could be considered a draw back. I would recommend this commentary as an addition but not as a primary source.