This song is called "Wear the Crown" by Bill Drake. It was inspired by the story of the missionary Bonnie Witherall, who was killed by assassins in Lebanon after she ministered to muslim women in Sidon, Lebanon.
http://www.youtube.com/watch?v=7mmnu_D--Xg
Interview with Bill Drake regarding the Song:
http://www.youtube.com/watch?v=wCE8nhKksTo
Unashamed - A Christian Discussion Guild