And the sons of Izhar; Korah, and Nepheg, and Zichri. Korah - Though he became a rebel against God and Moses, (see Numbers 16:1, etc)., yet Moses, in his great impartiality, inserts his name among those of his other progenitors.
Related Commentaries of Exodus 6:21
Exodus 6:21
21 And the sons of Izhar; Korah, and Nepheg, and Zichri.