Albert Barnes Commentary Matthew 10:4

"Simon the Cananaean, and Judas Iscariot, who also betrayed him." — Matthew 10:4 (ASV)

Simon the Canaanite. Luke calls him Simon Zelotes, the zealous. It is probable that he was one of a small sect of the Jews called Zealots, because of special zeal in religion. His native place was probably Cana. Afterwards, he might appropriately be called by either title.

Judas Iscariot. It is probable this name was given to him to designate his native place. Carioth was a small town in the tribe of Judah.