A Manual Greek Lexicon of the New Testament + Keyed to Strong’s.
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.
A Dictionary of Catechisms from Puritan, Reformed, and several other denominations, such as Baptists, Broadus, Gadsby, Owen, etc.
Trench’s Classic work, Synonyms of the New Testament, is a study of Greek synonyms in the New Testament, showing their similarities and differences.
The American Church Dictionary and Cyclopedia By WIlliam James Miller First published in 1901. The Preface explains: “The writer of the following pages has long been convinced, from an experience of many years in the Ministry, that a great desideratum among Church people is a Church Dictionary, especially one not so expensive as the more costly works, and at the same time something more complete and satisfactory than a mere glossary of terms. What seems to be needed is an inexpensive, handy volume, “short enough for busy people, plain enough for common people, cheap enough for poor people,” yet complete enough to give the information needed. The present work was undertaken with this object in view.”
This dictionary will focus on the Tabernacle and items related to the Tabernacle and Temples such as the Feasts, Priesthood and Items in the Tabernacle.
Dictionary of Creeds and Confession throughout Church History, from the New Testament Times to the Twentieth Century.
Liddell Scott Greek-English Lexicon is a classic work for those who study Greek. This focuses on classical Greek as a comparison of Biblical Greek.