1 Samuel 17

David refused to use Saul’s armor and weapon, not because they didn’t fit, but because he had not tested them in combat.  He had already seen violent confrontation, and was described as a man of war in the previous chapter.  But he had to use the tools he was familiar with.  Often we think that if we could afford the latest technology that we could make a difference.  The LORD is more interested in what we are doing with what he has already provided us.  God used a rock at the hands of a skilled marksman with rocks.  He can use us.

LORD, give us the courage to do what you call us to do, and the wisdom to use our tested tools to do it.