Here is the list of mentions of the Day of the Lord in Joel, each with a one-word theme summarizing its essence:

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1. Joel 1:15 – Destruction

“Woe for the day! For the day of the Lord is near, and it will come as destruction from the Almighty.”

• Theme: Destruction. The verse portrays the “Day of the Lord” as a time of devastating judgment, marked by ruin and calamity.

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2. Joel 2:1 – Warning

“Blow a trumpet in Zion, and sound an alarm on My holy mountain! Let all the inhabitants of the land tremble, for the day of the Lord is coming; indeed, it is near.”

• Theme: Warning. This verse is an urgent call to alertness and repentance as the day approaches.

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3. Joel 2:11 – Power

“The Lord utters His voice before His army; His camp is indeed very great, for mighty is one who carries out His word. The day of the Lord is indeed great and very awesome, and who can endure it?”

• Theme: Power. It emphasizes the overwhelming might of God and the inability of anyone to withstand His judgment.

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4. Joel 2:31 – Signs

“The sun will be turned into darkness, and the moon into blood, before the great and awesome day of the Lord comes.”

• Theme: Signs. Cosmic phenomena herald the coming of the “Day of the Lord,” acting as a warning of impending divine intervention.

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5. Joel 3:14 – Judgment

“Multitudes, multitudes in the valley of decision! For the day of the Lord is near in the valley of decision.”

• Theme: Judgment. This verse describes the gathering of nations for God’s final verdict, underscoring His righteous justice.

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Summary Table

Verse	Theme	Key Idea
Joel 1:15	Destruction	God’s judgment will bring devastation.
Joel 2:1	Warning	An urgent alarm to prepare for God’s day.
Joel 2:11	Power	None can endure the greatness of His might.
Joel 2:31	Signs	Cosmic disturbances signal its arrival.
Joel 3:14	Judgment	Nations will face divine justice.

Each reference builds on the concept of God’s justice, providing a holistic view of the “Day of the Lord.”