The tools listed below are listed also under "Works of reference on quotation, allusion, intertextuality, and so forth" on p. _ of the handout Basic English-Bible Reference. All of the exemplary screenshots are taken at the Gospel of John, chap. 1.
Though Dr. Nienhuis doesn't stress this aspect of the assignment, I insert a placeholder for it here. For the time being, though, I do no more than simply flag once again, in addition to the scholarship (commentaries, monographs, and articles),
I hope to add additional such tools as they come to mind, for example (as above),
(Collections of) ancient texts relevant to the study of the New Testament are too numerous to list. Here I give just a few. Of these, the first is an extremely useful handbook: