'Ambassador' in the Bible

A wicked messenger falleth into evil; But a faithful ambassador is health.

I have heard tidings from Jehovah, 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. Thus saith the Lord Jehovah concerning Edom: We have heard tidings from Jehovah, and an ambassador is sent among the nations,'saying , Arise ye, and let us 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.