Contradiction with Jeremiah 4:8
This verse speaks of girding with sackcloth and lamentation for God’s fierce anger, which contrasts with the removal of punishment and presence of the Lord in Zephaniah 3:15.
Jeremiah 4:8: For this gird you with sackcloth, lament and howl: for the fierce anger of the LORD is not turned back from us.
Contradiction with Lamentations 3:43
This verse expresses God covering with anger and persecuting, opposite to the picture of God removing judgment in Zephaniah 3:15.
Lamentations 3:43: Thou hast covered with anger, and persecuted us: thou hast slain, thou hast not pitied.
Contradiction with Ezekiel 7:8
God declares His intent to soon pour out fury and judge according to ways, which contradicts with the idea of taking away judgments in Zephaniah 3:15.
Ezekiel 7:8: Now will I shortly pour out my fury upon thee, and accomplish mine anger upon thee: and I will judge thee according to thy ways, and will recompense thee for all thine abominations.
Contradiction with Amos 5:18-20
It speaks of the day of the Lord bringing darkness, which contrasts the positive removal of adversaries' presence mentioned in Zephaniah 3:15.
Amos 5:18-20: 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.
Contradiction with Nahum 1:2
God is presented as jealous and revengeful on adversaries, contrary to the peace and safety promised to Jerusalem in Zephaniah 3:15.
Nahum 1:2: God [is] jealous, and the LORD revengeth; the LORD revengeth, and [is] furious; the LORD will take vengeance on his adversaries, and he reserveth [wrath] for his enemies. [God...: or, The LORD is a jealous God, and a revenger, etc] [is furious: Heb. that hath fury]