Contradiction with Lamentations 3:31
Contradicts by stating that the Lord will not cast off forever, which offers hope, whereas Lamentations 3:20 emphasizes continual remembrance and soul's depression.
Lamentations 3:31: For the Lord will not cast off for ever:
Contradiction with Philippians 4:8
Encourages thinking about things that are true, honest, just, pure, lovely, and of good report, which contrasts with the focus on affliction and bitterness in Lamentations 3:20.
Philippians 4:8: Finally, brethren, whatsoever things are true, whatsoever things [are] honest, whatsoever things [are] just, whatsoever things [are] pure, whatsoever things [are] lovely, whatsoever things [are] of good report; if [there be] any virtue, and if [there be] any praise, think on these things. [honest: or, venerable]
Contradiction with Isaiah 43:18
Advises forgetting the former things and not dwelling on the past, which contradicts the act of remembrance in Lamentations 3:20.
Isaiah 43:18: Remember ye not the former things, neither consider the things of old.
Contradiction with 1 Thessalonians 5:16
Encourages believers to rejoice evermore, which is in contrast to the despair expressed in Lamentations 3:20.
1 Thessalonians 5:16: Rejoice evermore.
Contradiction with Psalm 77:11-12
Calls for the remembrance of God's deeds and wonders, focusing on positive reflection, as opposed to the negative remembrance in Lamentations 3:20.
Psalm 77:11-12: I will remember the works of the LORD: surely I will remember thy wonders of old.