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
Wilson’s Dictionary of Bible Types
is a useful resource for teachers, study groups, and pastors by providing explanations for over 6,000 different Scripture passages.
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!
Buck’s Theological Dictionary still contains some interesting material, especially when it comes to Religious Sects.