Moulton and Milligan – Vocabulary of the Greek NT is a Greek lexicon focusing on the Papyrus Greek.
A classic Greek lexicon useful for every theology student. Note that Thayer was a universalist, so be careful with any word dealing with salvation, and also the Trinity (his definition of “Christ” would seem to doubt Jesus’ deity). Basically the majority of his word definitions are from standard usage in the Greek NT and classical literature, so in theologically charged words, be careful.
Jewish Reference Dictionary of People, Places, Plants & Animals
Morrish Bible Dictionary
King James Version Dictionary
The ISBE is a classic Bible reference compiled from nearly 10,000 entries written by over 200 different Bible scholars and teachers. In addition to the encyclopedia articles, all of the major words of the Bible are represented and defined.
Strong Diccionario Griego y Hebreo al Español
Wace is a dictionary of people sects and heresies
This is a dictionary taken (with permission) from the website of CARM.ORG (Matt Slick). These are definitions of theological terms. Excellent!
American Tract Society Bible Dictionary – Containing 2286 entries cross-referenced and cross-linked along with the images found in the original printed version. 1859