David hears this and asks God if he and his men should go fight the Philistines. They do and save the town of Keilah. What's this got to do with us?
A few facts of the situation: this is when David was on the run from King Saul. David wasn't king yet. He was an outlaw according to the king of the land. When he was told about the fighting in Keilah he could have said, "That isn't my problem. That's the king's responsibility."
But he didn't. He asked God and he took care of the enemy.
The more interesting story here is Saul. Why wasn't he taking care of his people? And it gets even more interesting. When Saul was told that David and his men were in this town, he decided to go after him and burn the town down to get at David. The king was willing to sacrifice his people to get at one man he was obsessed with.
Now David hasn't done anything but love Saul as a father. David served Saul faithfully until Saul started to try and kill him. David had to leave to save his own life. Saul then became obsessed with David, wanting to destroy him. Saul was jealous of David. David was obviously anointed by God and Saul wasn't. The people loved David.
Because of this obsession, Saul quit doing what he should have doing -- taking care of his people. The obsession screwed up his mind. He couldn't see truth anymore. He lost his compassion. He lost his vision. He lost his personhood in a sense. The obsession destroyed him.
So, is an obsession destroying you? Is an obsession causing you to act differently? Is an obsession consuming your thoughts, taking your energies, causing you to neglect what you are supposed to do?
The only obsession (if we can call it that) that is healthy is loving Jesus. I didn't say religion. A obsession with religion will destroy someone as much as any other obsession.
If are thoughts are consumed with loving Jesus Christ, we will be freed from everything that wants to trap us and suck life out of us.