Charles Ellicott Commentary Zechariah 8:23

"Thus saith Jehovah of hosts: In those days [it shall come to pass], that ten men shall take hold, out of all the languages of the nations, they shall take hold of the skirt of him that is a Jew, saying, We will go with you, for we have heard that God is with you." — Zechariah 8:23 (ASV)

Ten—This number is used indefinitely, to express a large number ; the number “seven” is used in a like sense in Isaiah 4:1.