For they are men wondered at— Men of wonder, is a Hebraism for signifying, or typical men; men portending future things, or proposed to others for signs and types; [τερατοσκοποι, LXX.] as men of blood, and men of mercy, are put for bloody and merciful men. Joshua being distinguished as one of these typical persons, when the prophet, directing God's word to him, who was in no sense the branch that they expected, adds, Behold my servant the Branch, it was hardly possible that they should misconstrue his words, or fancy that Joshua was principally intended in the prophesy. It appears that they did not; for their Targum, both here and chap. Zechariah 6:12 reads, Behold the man, whose name is the Messiah; and the Branch is numbered among the several names of the Messiah by the ancient Jews. See Isaiah 4:2 and Jeremiah 23:5. Zerubbabel was probably one of Joshua's assessors, whom Zechariah calls men of wonder, or typical men: however, in the following chapter he is proposed as a type of the Messiah; as he is also Haggai 2:21.
Related Commentaries of Zechariah 3:8
Zechariah 3:8
8 Hear now, O Joshua the high priest, thou, and thy fellows that sit before thee: for they are men wondered at: for, behold, I will bring forth my servant the BRANCH.