David was already tired of being chased by saw and forced to hide in caves to avoid being killed by him. In a time of great pressure and spiritual weakness, he stopped trusting completely in God and instead sought protection in enemy territory.

To demonstrate loyalty to Achish, the king of the Palestinians, he did some crude things.

When we fail to look to the Most High, we begin become weak in faith, are filled with doubt and fear, and as a result, act in a way that is contrary to what he consoles.

When faith and trust give way to feelings, or choices will always be wrong comma and consequences are inevitable.