Contradiction with Matthew 5:44
Jeremiah 26:8 describes an attempt to kill the prophet, whereas Matthew 5:44 teaches believers to love their enemies and pray for those who persecute them, presenting a contradiction in the response towards an adversary.
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 Exodus 20:13
Jeremiah 26:8 involves the intent to kill, contradicting Exodus 20:13, which commands "Thou shalt not kill," urging against taking life.
Exodus 20:13: Thou shalt not kill.
Contradiction with Romans 12:19
Jeremiah 26:8 shows the people's intent to take revenge on Jeremiah, whereas Romans 12:19 advises against personal vengeance, instructing believers to 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 19:11
Jeremiah 26:8 involves anger leading to violence, while Proverbs 19:11 depicts wisdom in being slow to anger and glory in overlooking transgressions.
Proverbs 19:11: The discretion of a man deferreth his anger; and [it is] his glory to pass over a transgression. [discretion: or, prudence]
Contradiction with John 13:34
Jeremiah 26:8 involves hostility towards a prophet's message, conflicting with John 13:34 which commands believers to love one another as Jesus loved.
John 13:34: A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.