Where does “Ռուբէն” come from?

Ռուբէն (Old Armenian) comes from Ancient Greek Ῥουβήν, from Biblical Hebrew רְאוּבֵן.

Ancestry of “Ռուբէն”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ῥουβήν	—
2	Biblical Hebrew	רְאוּבֵן	—

Ռուբէն — Etymology, Origin & Word History | Etymology Explorer