Contradiction with Amos 3:7
This verse implies that God reveals His plans to prophets, which aligns and does not directly contradict Jeremiah 25:2, but could be perceived differently when considering the extent of revelation depicted by Jeremiah.
Amos 3:7: Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets.
Contradiction with Ezekiel 3:17
Appointed watchmen have a duty to warn others; any contradiction would be thematic regarding the nature of prophecy and roles of prophets, not with the action of speaking.
Ezekiel 3:17: Son of man, I have made thee a watchman unto the house of Israel: therefore hear the word at my mouth, and give them warning from me.