Contradiction with Proverbs 16:7
While Psalms 35:20 speaks of devising deceitful matters against peaceful ones, Proverbs 16:7 states that when a man's ways please the Lord, he makes even his enemies to be at peace with him.
Proverbs 16:7: When a man's ways please the LORD, he maketh even his enemies to be at peace with him.
Contradiction with Matthew 5:9
Psalms 35:20 describes deceit against peace, whereas Matthew 5:9 states, "Blessed are the peacemakers: for they shall be called the children of God."
Matthew 5:9: Blessed [are] the peacemakers: for they shall be called the children of God.
Contradiction with Romans 12:18
Contrary to the malintent described in Psalms 35:20, Romans 12:18 advises that if it is possible, we should live peaceably with all men.
Romans 12:18: If it be possible, as much as lieth in you, live peaceably with all men.
Contradiction with 1 Peter 3:11
While Psalms 35:20 portrays deceit and malice against peace, 1 Peter 3:11 encourages seeking peace and ensue it.
1 Peter 3:11: Let him eschew evil, and do good; let him seek peace, and ensue it.
Contradiction with James 3:18
Psalms 35:20 implies hostility against peace, but James 3:18 states that the fruit of righteousness is sown in peace of them that make peace.
James 3:18: And the fruit of righteousness is sown in peace of them that make peace.
Paradox #1
Psalms 35:20 could highlight a moral inconsistency if someone uses words of peace but quietly plans harm or deceit. It contrasts the values of honesty and malice, showing a conflict between outward expressions and inner intentions.