"As the Philistine moved closer to attack him, David ran quickly toward the battle line to meet him. Reaching into his bag and taking out a stone, he slung it and struck the Philistine on the forehead. The stone sank into his forehead, and he fell facedown on the ground." -- 1 Samuel 17:48-49

This is David's moment.  The Philistine is Goliath, who stands over 9 feet tall and is the enemy's most powerful weapon.  Instead of the two nations going to battle, it is Goliath himself who offers the one-on-one fight to determine the winning nation.  Saul and his troops are confused and scared.  But then David steps up and offers to fight.  At first, Saul resists, but having had killed both a bear and lion with his bare hands, David is not afraid and wins his case.  After trying to put armor and battle gear on, David decides to go with what's comfortable.  So he takes a sling and five smooth stones.  When he shows up, he's mocked and ridiculed by Goliath.  But David says when he wins today, all will know that there is a God in Israel.  The rest is history.

One of the things that stands out most in this story for me is how instead of taking on the role and dress of "warrior", David took what he knew and was comfortable with (the sling) and stepped in with confidence.  So often, many of us feel that we cannot act with courage and confidence in a situation unless our appearance confirms for others we are in our rightful place.  We forget that sometimes, people need to see something different, and that different is us.  Stay attuned to God's desires.  If God has called you to act or be or do something... do not worry whether you appear to have what you need or not.  Take what you know.  Use what you're comfortable with.  And then act.  You have what you need.

Readings:  1 Samuel 17:1-18:4; John 8:21-30; Psalm 111:1-10; Proverbs 15:11