🔼The name Jashub in the Bible
The name Jashub is assigned to two different men in the Bible. The first Jashub we meet is a family-head of the ישובי, the Jashubites of Issachar (Numbers 26:24), one of four sons of Issachar (1 Chronicles 7:1, here spelled ישיב, Jashib). The other Jashub is a son of Bani and is mentioned among those who had married and were going to divorce their foreign wives, encouraged by Ezra the Reformer (Ezra 10:29).
🔼Etymology of the name Jashub
The name Jashub comes from the root-verb שוב (shub), meaning to return:
The name Jashub is the verb shub pre-fixed with the letter yod, which makes the verb active: he will shub.
For a meaning of the name Jashub, NOBSE Study Bible Name List reads He Returns. Jones' Dictionary of Old Testament Proper Names proposes He Will Return.