Tubal-cain, Tubalcain

Concise Bible Dictionary:

It is remarkable, and it is doubtless not without a purpose, that these metals should be mentioned so early. It quite confutes the theory that all mankind have risen from some degraded position, and that they must have passed long periods in using stone implements before they used metals. This may be true of some who fell far below the moral status of Adam and Eve after their fall. Romans 1:24, 2624Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonor their own bodies between themselves: (Romans 1:24)
26For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature: (Romans 1:26) explains much: “God gave them up” to their lusts because they turned their backs on Him.

Strong’s Dictionary of Hebrew Words:

Number:
8423 (find all occurrences in KJV Bible)
Transliteration:
Tuwbal
Phonic:
Qayin
Meaning:
apparently from 2986 (compare 2981) and 7014; offspring of Cain; Tubal-Kajin, an antidiluvian patriarch
KJV Usage:
Tubal-cain

Jackson’s Dictionary of Scripture Proper Names:

thou wilt be brought of Cain

Potts’ Bible Proper Names:

Flowing forth of Cain; possessor of the world:―son of Lamech by Zillah, Gen. 4:22. {Profluvium Caini}