One other note …

I quite understand how daunting that 3 volume (about 2200 pages) set can be. My own study of it occupied nearly I year if I remember correctly. I don’t always agree, but in several cases I learned the opposing position from Milgrom himself.

Another good source of information on Torah is the JPS Commentary set. Milgrom wrote the volume on Numbers. Quite frankly I think Christians need to read Jewish commentary on the Torah to get anywhere. I have simply not read anything by Christian commentators to match, even where the Christian commentator is reflecting theology I strongly approve. The engagement with the text is just generally not adequate. The contributor to the JPS series are all excellent writers, and though there is a great deal of appeal to the Hebrew as you would expect, I think one could read it without being conversant with the language.