In Numbers 22-24 (I think) the one guy's donkey starts talking because God opened the donkey's mouth, but does that mean that God is talking through the donkey or did God just show the donkey how to talk?
"Then the LORD opened the mouth of the donkey, and she said to Balaam, "What have I done to you, that you have struck me these three times?"" (Numbers 22:28).
"They have forsaken the right way and gone astray, following the way of Balaam the son of Beor, who loved the wages of unrighteousness; but he was rebuked for his iniquity: a dumb donkey speaking with a man's voice restrained the madness of the prophet" (II Peter 2:15-16).
This falls under the class of a miracle, since donkeys by nature are not able to speak. It was God, who created all things, who chose to give this donkey for a moment of time the ability to speak and reason. There is no indication that God was speaking through the donkey.