'Ambassador' in the Bible

I have heard news from Yahweh, and an ambassador is sent among the nations, [saying], Gather yourselves together, and come against her, and rise up to the battle.

The vision of Obadiah. This is what the Lord Yahweh says about Edom. We have heard news from Yahweh, and an ambassador is sent among the nations, saying, "Arise, and let's rise up against her in battle.

for which I am an ambassador in chains; that in it I may speak boldly, as I ought to speak.