Contradiction with Revelation 21:4
Amos 8:10 speaks of mourning and lamentation, while Revelation 21:4 promises that God will wipe away tears, and there will be no more mourning.
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 John 16:20
Amos 8:10 describes turning feasts into mourning, whereas John 16:20 mentions sorrow turning into joy.
John 16:20: Verily, verily, I say unto you, That ye shall weep and lament, but the world shall rejoice: and ye shall be sorrowful, but your sorrow shall be turned into joy.
Contradiction with Isaiah 61:3
Amos 8:10 speaks of turning joy into mourning, but Isaiah 61:3 offers the oil of joy for mourning.
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.
Contradiction with Psalm 30:11
Amos 8:10 is about mourning and darkness, while Psalm 30:11 describes God turning mourning into dancing.
Psalm 30:11: Thou hast turned for me my mourning into dancing: thou hast put off my sackcloth, and girded me with gladness;
Contradiction with Zechariah 8:19
Amos 8:10 predicts mourning, whereas Zechariah 8:19 turns fasts of mourning into joy and gladness.
Zechariah 8:19: Thus saith the LORD of hosts; The fast of the fourth [month], and the fast of the fifth, and the fast of the seventh, and the fast of the tenth, shall be to the house of Judah joy and gladness, and cheerful feasts; therefore love the truth and peace. [feasts: or, solemn, or, set times]
Contradiction with Isaiah 25:8
Amos 8:10 mentions lamentation, while Isaiah 25:8 states that God will swallow up death and wipe away tears.
Isaiah 25:8: He will swallow up death in victory; and the Lord GOD will wipe away tears from off all faces; and the rebuke of his people shall he take away from off all the earth: for the LORD hath spoken [it].
Contradiction with Ecclesiastes 3:4
Amos 8:10 describes lamentation, contrary to Ecclesiastes 3:4, which says there is a time to mourn and a time to dance, indicating balance.
Ecclesiastes 3:4: A time to weep, and a time to laugh; a time to mourn, and a time to dance;