Passage
Fear not, O land, be glad, and rejoice: for the Lord hath done great things.
Fear not, O land, be glad, and rejoice: for the Lord hath done great things.
Joel 2:19 And the Lord answered, and said to his people: Behold I will send you corn, and wine, and oil, and you shall be filled with them: and I will no more make you a reproach among the nations.
Joel 2:20 And I will remove far off from you the northern enemy: and I will drive him into a land unpassable, and desert, with his face towards the east sea, and his hinder part towards the utmost sea: and his stench shall ascend, and his rottenness shall go up, because he hath done proudly.
Joel 2:21 Fear not, O land, be glad, and rejoice: for the Lord hath done great things.
Joel 2:22 Fear not, ye beasts of the fields: for the beautiful places of the wilderness are sprung, for the tree hath brought forth its fruit, the fig tree, and the vine have yielded their strength.
Joel 2:23 And you, O children of Sion, rejoice, and be joyful in the Lord your God: because he hath given you a teacher of justice, and he will make the early and the latter rain to come down to you as in the beginning.
The verse centers on "fear", "land", "glad", "rejoice", "lord", "hath", "done", and "great". It is saying that the verse draws attention to "fear" and "land", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 20's "And I will remove far off from..." into verse 22's "Fear not ye beasts of the fields...", so "fear" and "land" belong inside that flow. In Joel context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "fear" and "land" with trust shaped by these words, not by a vague optimism outside the passage.