For your project portfolio, you will need to identify key fields, scholars, and academic and theological resources relevant to your NPO. Scholarly work is often published as journal articles, which you can find by searching in various databases. Each database allows you to search a particular set of scholarly journals. You will want to cast your net wide at first, trying various search words (keywords) and browsing through the results in each database. If you are unfamiliar with scholarly research articles, you might check out the video below.
There are many paths to travel down when doing research in graduate school. Here a few more databases available from the library that will lead you to other discoveries.