Contradiction with Matthew 5:39
This verse contradicts Psalms 18:34 as it advocates turning the other cheek and not resisting evil, rather than preparing for battle or war.
Matthew 5:39: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
Contradiction with Isaiah 2:4
This verse speaks of turning swords into plowshares and not learning war anymore, opposing the martial readiness suggested in Psalms 18:34.
Isaiah 2:4: And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. [pruninghooks: or, scythes]
Contradiction with Romans 12:19
This verse advises against taking personal vengeance, which contrasts with training for combat in Psalms 18:34.
Romans 12:19: Dearly beloved, avenge not yourselves, but [rather] give place unto wrath: for it is written, Vengeance [is] mine; I will repay, saith the Lord.
Contradiction with James 1:20
This verse states that human anger does not produce the righteousness that God desires, which can conflict with the notion of gearing up for combat as mentioned in Psalms 18:34.
James 1:20: For the wrath of man worketh not the righteousness of God.
Paradox #1
The potential contradiction in Psalms 18:34 might involve the idea of promoting violence or warfare, as it talks about training for battle. This could conflict with messages of peace and love found elsewhere in religious teachings. Some might see it as inconsistent with the broader principle of non-violence.