Contradiction with Matthew 5:4
Contradicts by implying that mourning leads to comfort, whereas Isaiah 15:3 suggests an unrelenting state of lamentation.
Matthew 5:4: Blessed [are] they that mourn: for they shall be comforted.
Contradiction with Ecclesiastes 3:4
Contradicts by suggesting that mourning is part of a balanced cycle, unlike the ongoing and pervasive mourning in Isaiah 15:3.
Ecclesiastes 3:4: A time to weep, and a time to laugh; a time to mourn, and a time to dance;
Contradiction with Psalm 30:5
Contradicts by promising that weeping is temporary and joy comes in the morning, while Isaiah 15:3 depicts continuous weeping without relief.
Psalm 30:5: For his anger [endureth but] a moment; in his favour [is] life: weeping may endure for a night, but joy [cometh] in the morning. [his anger...: Heb. there is but a moment in his anger] [for a night: Heb. in the evening] [joy: Heb. singing]
Contradiction with Revelation 21:4
Contradicts by offering a future without mourning, in contrast to the unending mourning in Isaiah 15:3.
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.
Contradiction with Isaiah 61:3
Contradicts by promising comfort and joy for those who mourn, unlike the depiction of unmitigated mourning in Isaiah 15:3.
Isaiah 61:3: To appoint unto them that mourn in Zion, to give unto them beauty for ashes, the oil of joy for mourning, the garment of praise for the spirit of heaviness; that they might be called trees of righteousness, the planting of the LORD, that he might be glorified.