Contradiction with Isaiah 14:7
This verse describes peace and joy, which contradicts the anguish and dismay in Isaiah 21:3.
Isaiah 14:7: The whole earth is at rest, [and] is quiet: they break forth into singing.
Contradiction with 1 Thessalonians 5:3
This verse speaks about sudden destruction while people are saying "Peace and safety," contrasting the forewarning in Isaiah 21:3.
1 Thessalonians 5:3: For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.
Contradiction with Jeremiah 6:14
Talks of false peace and healing, opposing the true turmoil expressed in Isaiah 21:3.
Jeremiah 6:14: They have healed also the hurt [of the daughter] of my people slightly, saying, Peace, peace; when [there is] no peace. [hurt: Heb. bruise, or, breach]
Contradiction with Ezekiel 13:10
Illustrates a false sense of peace, contradictory to the genuine anguish in Isaiah 21:3.
Ezekiel 13:10: Because, even because they have seduced my people, saying, Peace; and [there was] no peace; and one built up a wall, and, lo, others daubed it with untempered [morter]: [a wall: or, a slight wall]
Contradiction with Revelation 21:4
Describes the absence of pain and suffering, opposing the intense pain in Isaiah 21:3.
Revelation 21:4: And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.