I would say that in terms of understanding both the history and language of the New Testament you cannot get better than this set with Dr. Porter. He specialized in Verbal Aspect coming out of his dissertation (which is published with Peter Lang and is surprisingly NOT in this set), but has gone on to publish, team up with, and spend his entire career focusing on the linguistic skills of the Biblical education craft. The lesson is simply this--while theology is crucial in terms of belief, ethics, ministry, and views of God, Linguistic skills--i.e., application of criteria, methodology, conclusions and evaluation--remains as THE quintessential skill for biblical studies because as far as that original New Testament community goes--"the language is all we have left." (besides the archaeology of course but even that is a semiotic of culture). This is where historical criticism wanted to go but did not have the tools. So that is where rhetorical criticism tried to pick up the baton but could not make it past the text. Now Sociolinguistics--the study of languages as they function in society--has already begun to come out with some outstanding research of how this NT text would have found its expression in the original communities when taken in tandem with the Social-Scientific findings. (the reason Porter will instruct you in Systemic Functional Linguistics as opposed to say Chomskian or Typological approaches) I don't recommend it because its new. I recommend it for its depth of insight gained into the text of Scripture as a real-world communication between people facing life-altering issues. As far as I'm concerned there simply is no better way to spend your money. If they had offered this set when I first received my library, I would have started with this set, combed through its bibliography and expanded my library from there.