Tubal-cain or Tubalcain (Hebrew: תּוּבַל קַיִן – Tū́ḇal Qáyin) is a person mentioned in the Bible, in Genesis 4:22 as well as in the Hebrew Book of Jasher, known for being the first blacksmith. He is stated as the "forger of all instruments of bronze and iron". He was the fourth great grandson of Cain, and the son of Lamech and Zillah. He was the brother of Naamah and half-brother of Jabal and Jubal.
Tubal-cain in his forge. Tapestry, Musée de Cluny – Musée national du Moyen Âge
|Other names||Tubal-Cain, Tubalcain, Tubal (simplified name)|
|Known for||Forefather of smiths|
|Title||"An instructor of every craftsman in bronze and iron"|
|Parent(s)||Lamech and Zillah|
According to Rashi, Tubal-Cain's name literally means "Cain's-Spices", with the Hebrew word Tū́ḇal (תובל) deriving from the word Tū́ḇlin (תבלין) meaning spices. Rashi states that he was named this, because he "seasoned and improved the work of Cain" In other words, because he was a blacksmith, who helped to make weapons which could be used to kill more efficiently, he invokes his ancestor Cain's sin of murder. Futhermore according to Tanhuma bar Abba, one day, Tubal-cain and his father Lamech were hunting together with Tubal-cain serving as an aid for his blind father. In the distance is Cain who Lamech believes to be an animal. He confirms with Tubal-cain that, it is an animal, however Tubal-cain deceives his father, and lets him shoot and kill his forefather Cain, possibly because of Tubal-cain's blood lust. When Lamech realizes what he has done he throws his hands up in a fit of mourning, accidentally killing his son Tubal-Cain. However Genesis Rabbah disagrees with this narrative. 
In Antiquities of the Jews, Josephus says that "Tubal exceeded all men in strength, and was very expert and famous in martial performances, ... and first of all invented the art of working brass."
In the King James Version, his name is rendered as Tubalcain. In the New International Version and the English Standard Version, it is Tubal-cain; the Latin Vulgate renders him as Thubalcain. It is not clear why he has a double-barreled first name. Gordon Wenham suggests that the name Cain means smith (which would anticipate the remarks about his metalworking skill), or that he is called Tubal Cain in order to distinguish him from the other Tubal, the son of Japheth. Richard Coggins suggests it "may be a variant of the same tradition which lists Tubal in the table of nations" at Gen 10, as a land well known for metalwork. In the Book of Jasher (Pseudo-Jasher) (1751), the name of Tubal-Cain is explained by Zillah, his mother: "After I had withered away have I obtained him from the Almighty God" (2:24). The intended conclusion here is that "Cain" (given earlier in the idea of "obtaining") was merged with "Tubal", a word seemingly to denote "withering" by contextual speculation. Genesis 4:22 says that Tubal-cain was the "forger of all instruments of bronze and iron" (ESV) or an "instructor of every artificer in brass and iron" (KJV). Although this may mean he was a metalsmith, a comparison with verses 20 and 21 suggests that he may have been the very first artificer in brass and iron. T. C. Mitchell suggests that he "discovered the possibilities of cold forging native copper and meteoric iron." Tubal-cain has even been described as the first chemist. Walter Elwell suggests that his invention of superior weapons may have been the motivation for Lamech's interest in avenging blood. Alternatively, E. E. Kellett suggests that Tubal-cain may have been a miner.
- Rabbi Abraham ben Isaiah & Rabbi Benjamin Sharfman (1949): The Pentateuch and Rashi's Commentary, A Linear Translation into English, Genesis 4:22
- Gordon Wenham, Genesis 1–15 (Word, 1987), 113.
- Richard Coggins (1981). Who's Who in the Bible. London: Batsford. p. 154. ISBN 0-7134-0144-3.
- T. C. Mitchell, "Tubal-cain," in New Bible Dictionary (IVF, 1962), 1302.
- "Tubal-Cain Acclaimed as Pioneer Chemist". The Science News-Letter. 40 (9): 142. 1941. JSTOR 3918014.
- Elwell, Walter E. (1988). Baker Encyclopedia of the Bible. Grand Rapids, Michigan: Baker Book House. p. 2109. ISBN 0-8010-3447-7.
- Kellett, E.E. (24 July 2016). "Some Old Testament Notes and Queries". The Expository Times. 33 (9): 426. doi:10.1177/001452462203300918.
- Media related to Tubal-Cain at Wikimedia Commons