Charles Ellicott Commentary Genesis 46:13

"And the sons of Issachar: Tola, and Puvah, and Iob, and Shimron." — Genesis 46:13 (ASV)

Issachar has four sons:

Genesis 46:13: Tola, Phuvah, Job, Shimron.

Numbers 26:23–24: Tola, Pua, Jashiib, Shimron.

1 Chronicles 7:1: Tola, Puah, Jaehub, Shimrom.