Contradiction with Matthew 5:44
Psalms 7:5 speaks of delivering one's soul to the enemy if guilty, while Matthew 5:44 teaches to love and pray for enemies instead of delivering oneself to them.
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
While Psalms 7:5 implies allowing enemies to prevail if guilty, Romans 12:19 instructs to leave vengeance to God, not surrendering to enemies.
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 Genesis 50:20
Psalms 7:5 considers being overtaken by enemies as a consequence of wrongdoing, whereas Genesis 50:20 suggests that what others intend for harm, God can use for good, not the destruction of the soul.
Genesis 50:20: But as for you, ye thought evil against me; [but] God meant it unto good, to bring to pass, as [it is] this day, to save much people alive.
Contradiction with Proverbs 24:17-18
Psalms 7:5 does not warn against rejoicing when an enemy falls, unlike Proverbs 24:17-18 which explicitly advises against it.
Proverbs 24:17-18: Rejoice not when thine enemy falleth, and let not thine heart be glad when he stumbleth: