1 Samuel 17:48-51 – As Goliath moved closer to attack, David quickly ran out to meet him. Reaching into his shepherd’s bag and taking out a stone, he hurled it from his sling and hit the Phillistine in the forehead.  The stone sank in, and Goliath stumbled and fell face downward to the ground.  So David triumphed over the Phillistine giant with only a stone and sling.  And since he had no sword, he ran over and pulled Goliath’s sword from its sheath.  David used it to kill the giant and cut off his head.
The story of David vs. Goliath is one Bible story most people know about.  David is a warrior among warriors, with a line of victories of battle most will never experience.  Most of you know David is just a boy when he takes out Goliath.  He is not a formally trained warrior like the army going against the Phillistines.  He was only a shepherd boy.  He had no formal weapons such as swords, spears, or other type of blade.  He had a rock and a sling.  He has no training in precision, but the only real training he could use is the ability to take on a bear or lion.  I know I cannot do that.  There is one thing David could rely on no weapon of choice could compete with.  David’s faith in Christ and his knowledge of Christ’s power is unmistakable.
1 Samuel 17 verse 36 says, “I have done this to both lions and bears, and I’ll do it to this pagan Phillistine, too, for he has defied the armies of the living God!  The Lord who saved me from the claws of the lion and the bear will save me from this Phillistine!”
David has quite the opposition from Saul, however.  No matter how much he wanted to take Goliath on,   Saul only saw the physical limitations in David.  He looked at David’s age and size, and Goliath’s experience in the army.  He did not see the true power behind David.
Saul in 1 Samuel 17, verse 33 says, “Don’t be ridiculous!” Saul replied.  “There is no way you can go against this Phillistine.  You are only a boy, and he has been in the army since he was a boy!”
Right there, most people would look at their physical limitations, and throw in the towel, especially when the king is the one to say this, but not David.  David still persisted, and gave a “resume” of his conquests as a shepherd, and did not forget to mention God’s hand in all of it.  So with a little persistence, Saul buckled, and David went to battle.
As Goliath moves closer to attack, David did not hide behind a rock, or second guess his decision to fight.  He shows courage as he quickly runs to meet him.  Most of us today do not have the same type of courage with smaller circumstances.  David goes in and takes out this big giant with a little stone.  David demonstrates precision accuracy and hits Goliath smack in the forehead, and down he goes.
To add insult to injury, not only does David take down Goliath with a “one shot, one kill” approach, he grabs Goliath’s very own sword and kills him with it.  That has to sting a little bit.  This little guy, no experience and no real weapon, takes you out at once, only to kill you with your own weapon.  But, that just shows you a fraction of a glimpse of the power of our God.
How can we apply the same persistent faith in God to our own lives?  We will never have to go against a giant, but our circumstances can feel that way.  If you find yourself feeling unqualified for a specific task, but you know God is calling you to it, do not trust in your own weakness and inferiority.  Trust in the One who gives you power to conquer giants.  Persevere at that which He calls you to become.  Faith moves mountains, and in some cases, takes out the bad guy.