This incident puts David is a very bad place; he is put with an army that is about to attack Israel. Should he fight alongside the Philistines against his own people and continue to live in safety or betray the Philistines and have nowhere to live? Fortunately, David is sent home from the battle before he has to decide.
We may find ourselves between a rock and a hard place sometimes. Even there, God is present. 1 Corinthians 10:13 tells us God provides a way of escape from those difficult situations that tempt us to do wrong.