Of the five commentaries in the JPS series on the first five books of the Bible, Milgrom's is the best.
Milgrom's commentary reveals a healthy respect for classical Jewish commentators but doesn't hesitate to address and add modern Biblical research. Milgrom excels when explaining the more obscure portions of Numbers, such as the rituals, calendars, and sacrifices. In addition to his verse by verse commentary, Milgrom adds lengthy excurses, exploring in more depth the issues raised in the commentary.
For example, his insights into the meaning of "tzitzit" - the fringes attached to four cornered garments - are outstanding. Milgrom argues that attaching the linen tzitzit with the dyed blue thread (techelet) to one's garment as required by the text, rendered the garment "shaatnez" - a forbidden combination of wool and linen. Milgrom notes that "shaatnez" is generally forbidden to be worn, but was permitted to be used in the construction of the Tabernacle and the clothing of the priests. By allowing, indeed requiring, every Israelite to attach shaatnez tzitzit to the corners of his/her garments, the Bible was drumming into the people the mandate that they be "a kingdom of priests and a holy nation."
Similarly, Milgrom's treatment of the paradox of the Red Cow, whose ashes purified those rendered impure by contact with the dead but rendered impure those who handled them is a tour de force of modern Biblical scholarship.
On almost every page, you will enjoy reading insights you may never before have come across. This book is a treasure for anyone willing to spend the time it requires.