Contradiction with 1 Thessalonians 5:2-3
While Joel 2:1 speaks of the day of the Lord as a time of warning and alarm, 1 Thessalonians 5:2-3 describes it as coming like a thief in the night, unexpectedly bringing sudden destruction to those proclaiming "peace and safety."
1 Thessalonians 5:2-3: For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.
Contradiction with Matthew 24:36
Joel 2:1 calls for the sounding of an alarm because the day of the Lord is at hand, but Matthew 24:36 states that no one knows the day or hour of the Lord's coming, not even the angels or the Son.
Matthew 24:36: But of that day and hour knoweth no [man], no, not the angels of heaven, but my Father only.
Contradiction with 1 Kings 19:12
Joel 2:1 describes the day of the Lord with a loud alarm and trumpet, whereas 1 Kings 19:12 signifies God's presence with a "still small voice," contrasting the loud and urgent tone in Joel.
1 Kings 19:12: And after the earthquake a fire; [but] the LORD [was] not in the fire: and after the fire a still small voice.
Contradiction with Amos 5:18
Joel 2:1 portrays the day of the Lord as imminent and to be warned of, yet Amos 5:18 warns against desiring this day, suggesting it brings darkness and not light, highlighting a different aspect of its approach.
Amos 5:18: Woe unto you that desire the day of the LORD! to what end [is] it for you? the day of the LORD [is] darkness, and not light.