Haggai, the messenger of the LORD, delivered the message of the LORD to the people: “I am with you,” declares the LORD.
The Prophet tells us here, that he had again roused the leaders as well as the common people; for except God frequently repeats his exhortations, our alacrity relaxes. Though then they had all attended to God’s command, it was yet necessary that they should be strengthened by a new promise: for men can be encouraged, and their indifference can be corrected, by no other means...
As an ear-ring of gold (says Solomon), and an ornament of fine gold, so amiable, so acceptable, in the sight of God and man, is a wise reprover upon an obedient ear, Pro 25:12. The prophet here was a wise but faithful reprover, in God's name, and he met with an obedient ear.
Commenting on Haggai 1:12-15
Then spoke Haggai the Lord's messenger,.... Which some render "angel"; hence sprung that notion, imbibed by some, that he was not a man, but an angel; whereas this only respects his office, being sent of God as an ambassador in his name with a message to his people: he now observing what effect his prophecy had upon the people; they being convinced of their sin...