A little background reading revealed this little nugget:
from 1 Samuel 18:10-11:
There is something about faith under dire circumstances that captures the imagination. David is calling for God to deliver and be a fortress to him. An unjust conspiracy by the king had David a step away from an assassin's blade. He calls for God to rouse Himself and punish all nations (verse 5), to go ahead so David can gloat over those who slandered him (verse 10). That is some raw emotion! Later when David had a chance to gloat over whatever remained of Saul's family, he showed mercy and love. This was not a call for obliteration but a need to express both frustration and worship the One who controlled his destiny. Faith in any circumstances, regardless of the result, frees us to be the type of people who can be a light to the world wherever we find ourselves.