John Trapp on Zechariah 1:21

Verſe 21. What come theſe to do?] he asketh not what they were? for by their tooles or weapons he perceived they were Carpenters or ſmith, (as ſome think) with iron inſtruments to breake theſe iron homes: confer 1 King. 22.11. He inquireth therefore of their imployment only. Futilous and fooliſh queſtions ſhould be avoided, Tit. 3.9.

ſo that no man did lift up his head] Turn head, or looke cheerfully as Luke 21.28.

but theſe are come to fray them] deterrere, ſaith the Vulgar: better deterrere, to fright them, now that they had puſht Iſrael to the Lord.

to caſt out &c.] Thus Omne ſub regno graviore regnum eſt. See Eccleſ. 5.7. with the Note there.