Passage
For how great is his goodness, and how great is his beauty! Corn shall make the young men flourish, and new wine the maidens.
For how great is his goodness, and how great is his beauty! Corn shall make the young men flourish, and new wine the maidens.
Zechariah 9:15 Jehovah of hosts will defend them; and they shall devour, and shall tread down the sling-stones; and they shall drink, [and] make a noise as from wine; and they shall be filled like a bowl, like the corners of the altar.
Zechariah 9:16 And Jehovah their God shall save them in that day as the flock of his people; for [they shall be as] the stones of a crown, lifted up upon his land.
Zechariah 9:17 For how great is his goodness, and how great is his beauty! Corn shall make the young men flourish, and new wine the maidens.
The verse centers on "great", "goodness", "beauty", "corn", "shall", "make", and "young". It is saying that the verse draws attention to "great" and "goodness", so its meaning should be read from those terms before moving to application.
The prior verse says "And Jehovah their God shall save them...", giving immediate footing for "great" and "goodness". In Zechariah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "great" and "goodness" with trust shaped by these words, not by a vague optimism outside the passage.