What is a Christian willing to accomplish by "doing whatever is necessary"?

What are we willing to attempt to accomplish by "doing whatever is necessary"?  The answer, literally, should be nothing, for there is nothing that we ought to be willing to utilize evil in order to achieve, but when most people use that phrase they're talking about effort and sacrifice, perhaps a little stepping over the line when needed.
The following video is a test, watch it first before reading my comments upon it below.  Your reaction to this video will judge your ability to understand the purpose of the Gospel, your willingness to obey what it requires of you, and just what it is that you are willing to see blood spilled to accomplish.  The speaker in the 6 minute video is Pastor Jeffress of the First Baptist Church of Dallas, a 12,000 member church.  He received a standing ovation at the end of these remarks, how will you respond?


Pastor Jeffress in response to ISIS

Did you cheer along with the audience, or did their cheers send a chill down your spine?  The words of Pastor Jeffress paint all Muslims as believers in the ideology of ISIS, saying that the Koran is full of commands to violence, while dismissing the commands of God in the Old Testament, and then following that up by saying that individual Christians need to love our enemies, but our government should blow them all to hell.  Also, where in the Bible does it say that God is against illegal immigrants and refugees, to claim Acts 17:26 as a justification for that political viewpoint is terribly poor exegesis.  Likewise, quoting a politician from the pulpit, and endorsing his viewpoint, especially a politician who has demonstrate virtually none of the fruit of the Spirit, is both foolish and dangerous.  I'm sorry, Pastor Jeffress, killing our enemies by "doing whatever is necessary" is NOT what Jesus taught his followers; not even close.  That misguided ideology led to the fire bombing of Dresden in WWII, civilian casualties be damned.  We cannot defeat radical Islam, just as we could not defeat militant communism, by lowering our moral standards and killing innocent women and children along with those who are actually a threat.  Don't we need to overcome evil with good, isn't that in the Bible, or do we get to ignore that command when the government does the killing for us?

What are you willing to accomplish by "doing whatever is necessary"?  I recently spoke privately with a friend because I was alarmed by his publicly expressed zeal to see Muslims, even if it is just militant ones, killed.  I tried to remind him that our obligation, given to us as a command by Jesus Christ, is to witness to the Gospel to everyone, our enemies included.  Sadly, the response I received later was to mock my concern for Muslims who don't know Christ, it seems some who claim the name of Christ (and thus should know better) would rather cheer while their enemies are killed by a smart bomb than sacrifice to share the Gospel with them.  If that attitude had prevailed in the early Church, the zealot hater of Christianity, Saul of Tarsus, would have been assassinated by Christians instead of hearing of God's forgiveness on the road to Damascus, there would never have been an Apostle Paul who received numerous beatings to spread the Gospel without God's willingness to forgive, God's willingness to turn an enemy of his people into a champion for his grace.
Did you cheer when Pastor Jeffress gave the government a blank check to kill as many people as necessary to stop those living among them who are terrorists?  Do you celebrate when the bombs fall, or when the knees bow in repentance?  The answer matters, there are over a billion Muslims in the world, aren't you required to present to them the Gospel of God's grace?  In the words of that redeemed enemy of Christ, the Apostle Paul, "I have become all things to all people so that by all possible means I might save some."