Contradiction with Matthew 5:44
Esther 5:8 involves strategizing against Haman, while Matthew 5:44 instructs to love and pray for enemies.
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
Esther 5:8 suggests seeking vengeance, whereas Romans 12:19 advises leaving vengeance to God.
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 20:22
Esther 5:8 implies planning retribution, Proverbs 20:22 counsels not to say "I will recompense evil."
Proverbs 20:22: Say not thou, I will recompense evil; [but] wait on the LORD, and he shall save thee.
Contradiction with Exodus 23:4
Esther 5:8 focuses on personal vendetta, while Exodus 23:4 urges helping your enemy's stray animal.
Exodus 23:4: If thou meet thine enemy's ox or his ass going astray, thou shalt surely bring it back to him again.
Contradiction with 1 Peter 3:9
Esther 5:8 pursues revenge, but 1 Peter 3:9 advises not returning evil for evil.
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.