The Collegeville Commentary series is a Catholic set of commentaries for the books of the Bible. Most of the commentaries are individual (ie: one commentary for one book of the Bible), and the commentary on Matthew is one of those. When I say that it is a Catholic commentary, I mean that it is written by someone of the Catholic faith, and as such all interpretation will be done from the Catholic standpoint. The commentary is a paperback book of over 100 pages. The top portion of each page contains the actual Biblical verses, while the lower portion of each page contains the commentary. The two are easily delineated, and the format is not confusing. Another nice feature to the individual books (like this one) as compared to the compendium (you can buy the Old or New Testament commentaries as single books) is that these contain pictures of sites important to Jesus' ministry, and where appropriate maps of the areas as well. Also, the compendiums do not have the Biblical verses but only contain the commentaries.