Extended Strong's Hebrew Lexicon (Brown-Driver-Briggs based)
Methushael
Usage: A man living at the time before the Flood, first mentioned at Gen.4.18; son of: Mehujael (H4232); father of: Lamech (H3929) § Methusael = "who is of God" son of Mehujael, 4th in descent from Cain, and father of Lamech