Contradiction with Matthew 5:44
While Psalms 45:5 speaks of striking down enemies, Matthew 5:44 teaches to love your enemies and bless those who curse you.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Romans 12:19
Psalms 45:5 calls for arrows in the hearts of enemies, whereas Romans 12:19 advises believers to not seek revenge but leave room for God's wrath.
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 Proverbs 25:21-22
Psalms 45:5 refers to defeating foes with arrows, but Proverbs 25:21-22 encourages feeding a hungry enemy.
Proverbs 25:21-22: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink:
Contradiction with Matthew 26:52
Psalms 45:5 describes triumph in battle, whereas Matthew 26:52 warns that those who live by the sword will die by the sword.
Matthew 26:52: Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
Contradiction with James 1:20
Psalms 45:5 depicts swift action against enemies, while James 1:20 states that human anger does not produce the righteousness that God desires.
James 1:20: For the wrath of man worketh not the righteousness of God.
Paradox #1
The contradiction or conflict in that verse might stem from its focus on using force or violence, which can seem inconsistent with other biblical teachings that emphasize peace, love, and forgiveness. While some parts of the Bible promote resolving conflicts peacefully, this verse appears to speak to a more aggressive approach, which can be seen as inconsistent within the broader moral teachings of the scripture.