Charles Ellicott Commentary Zechariah 4:10

"For who hath despised the day of small things? for these seven shall rejoice, and shall see the plummet in the hand of Zerubbabel; [these are] the eyes of Jehovah, which run to and fro through the whole earth." — Zechariah 4:10 (ASV)

For who has ... small things? —That is, surely no one, who intended to do great things, ever despised the day of small things. The interrogative sentence is practically a prohibition: “Let none despise the day of small things.”

For they shall rejoice ... whole earth. —Better, Then these seven shall with joy behold the plummet line in the hand of Zerubbabel; the eyes of the Lord — they sweep through the whole earth.

That is, if you do not despise this day of small things, when you see only the foundation of the Temple laid, the providential care of the Lord shall rejoice to see Zerubbabel taking the last perpendicular of the completed work.

But if you doubt the possibility of this, know that God’s providence extends over the whole earth, and that, therefore, He can make all things and all nations work together for the good of His chosen, Israel.