Contradiction with Proverbs 27:10
Esther 4:6 involves going to someone with a close relationship for urgent matters (Hathach to Mordecai), while Proverbs 27:10 advises relying on a nearby neighbor rather than a distant relative.
Proverbs 27:10: Thine own friend, and thy father's friend, forsake not; neither go into thy brother's house in the day of thy calamity: [for] better [is] a neighbour [that is] near than a brother far off.
Contradiction with Matthew 5:44
Esther 4:6 is set amidst enmity between Mordecai and Haman, yet Matthew 5:44 calls for loving and praying for enemies, a contrast to seeking the destruction of 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
Esther 4:6 reflects on seeking justice against adversaries, but Romans 12:19 advises against taking vengeance, leaving it to God instead.
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 Exodus 23:4-5
Esther 4:6 is part of a story of conflict strategy rooted in self-preservation, contrary to showing kindness to enemies' property as advised in Exodus 23:4-5.
Exodus 23:4-5: If thou meet thine enemy's ox or his ass going astray, thou shalt surely bring it back to him again.
Contradiction with Matthew 6:34
Esther 4:6 involves preparing for future threat mitigation, whereas Matthew 6:34 advises against worrying about tomorrow.
Matthew 6:34: Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day [is] the evil thereof.