John Gill Commentary 1 Chronicles 7:1

"And of the sons of Issachar: Tola, and Puah, Jashub, and Shimron, four." — 1 Chronicles 7:1 (ASV)

Now the sons of Issachar were Tola, Puah, Jashub, and Shimron,
four .
] The same number is given, (Genesis 46:13) with a small variation of two of their names, there called Phuvah and Job, from which so many families sprang, mentioned (Numbers 26:23Numbers 26:24) , where the names are the same as here.