I really admire the courage of Jeremiah in Jeremiah 21:1-5,

"This is the word that came to Jeremiah from the Lord, when King Zedekiah sent to him Pashur the son of Malchiah and Zephaniah the priest, the son of Maaseiah, saying, inquire of the Lord for us, for Nebuchadnezzar king of Babylon is making war against us.  Perhaps the Lord will deal with us according to all his wonderful deeds and will make him withdraw from us.  Then Jeremiah said to them: Thus you shall say to Zedekiah, Thus says the Lord, the God of Israel: Behold, I will turn back the weapons of war that are in your hands and with which you are fighting against the king of Babylon and against the Chaldeans who are besieging you outside the walls.  And I will bring them together into the midst of this city.  I myself will fight against you with outstretched hand and strong arm, in anger and in fury and in great wrath."

To fully appreciate what Jeremiah is doing here, you need to know that in chapter 20, Pashur (also a priest) beat up Jeremiah for proclaiming destruction against Judah as the Lord had commanded him.  Fresh off this beating, Pashur and Zephaniah show up asking for Jeremiah to inquire of the Lord for them, hoping He will "deal with them according to his wonderful deeds."  As a side note, I find it pretty gutsy that Pashur, Zephaniah, and Zedekiah would ask anything of Jeremiah, let alone that they were expecting to find favor with God.  Anyway, it is difficult enough to tell Christian people something they may not want to hear, even more difficult to tell unsaved people something they may not want to hear.  But here is Jeremiah, knowing full well that these guys won't like the message, and knowing they aren't afraid to inflict pain.  In the face of this, he boldly and unashamedly proclaims the message God gave to him.  Might we have the boldness and confidence that Jeremiah showed.