Contradiction with Matthew 5:44
Psalms 3:7 talks about smiting enemies, while Matthew 5:44 advises to love your enemies and pray for those who persecute 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 3:7 suggests a direct act of vengeance, whereas Romans 12:19 advises believers to avoid seeking personal vengeance and leave it to 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 24:17
Psalms 3:7 implies rejoicing in the downfall of enemies, but Proverbs 24:17 advises against rejoicing when your enemy falls.
Proverbs 24:17: Rejoice not when thine enemy falleth, and let not thine heart be glad when he stumbleth:
Contradiction with Luke 6:27
Psalms 3:7 expresses a desire for physical retribution against enemies, while Luke 6:27 instructs to love and do good to those who hate you.
Luke 6:27: But I say unto you which hear, Love your enemies, do good to them which hate you,
Contradiction with 1 Peter 3:9
Psalms 3:7 seeks physical retaliation against foes, contrary to 1 Peter 3:9, which encourages not repaying evil with evil but with blessing.
1 Peter 3:9: Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.
Paradox #1
The contradiction or inconsistency might lie in the verse's imagery of violence or retribution, which could conflict with other biblical teachings that emphasize forgiveness, peace, and love for enemies.