Contradiction with Exodus 23:6
This verse contradicts Jeremiah 38:9 because Exodus 23:6 instructs not to deny justice to the poor, whereas Jeremiah 38:9 describes how Jeremiah, poor and facing unjust punishment, needs rescue.
Exodus 23:6: Thou shalt not wrest the judgment of thy poor in his cause.
Contradiction with Proverbs 31:8-9
This verse contradicts Jeremiah 38:9 as Proverbs commands speaking up for those who cannot speak for themselves, while Jeremiah needed someone else to advocate for his unjust treatment.
Proverbs 31:8-9: Open thy mouth for the dumb in the cause of all such as are appointed to destruction. [such...: Heb. the sons of destruction]
Contradiction with Isaiah 1:17
This verse contradicts Jeremiah 38:9 because Isaiah 1:17 commands defending the oppressed, and Jeremiah had to rely on someone else to intercede for his plight against oppression.
Isaiah 1:17: Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow. [relieve: or, righten]