God is a specialist in using people who the world has rejected. He picks up those who have been written off, polishes them and turns them into great warriors of His kingdom. This is to let you know that it is not over with you yet. As long as you know whose report to believe, those who have written you off have made their greatest mistake. The name of Rahab, the harlot whose prostitution business was located where all eyes could see, was included in the genealogy of Jesus (Matthew 1:5-6).  Uriah’s wife, an adulteress, was also mentioned. This is to let you know that God has a purpose for each and every one of us. His purpose can only come to pass when we accept the Lordship of Jesus. The moment Jesus comes into your life, He blots out the handwriting of the past. Your past becomes past and the former sinner becomes a saint.
 
David as a weapon of the Almighty God went and picked five smooth stones when he was to confront Goliath. Not five regular stones but smooth ones. Anyone who will become a weapon of the Almighty cannot afford to be ordinary. God will not use ordinary Christians but smooth ones. It is interesting to note that when Shadrach, Meshach and Abednego were thrown into the fiery furnace, the fire refused to burn them because they were special children (Daniel 3:16-25). They were smooth weapons of the Almighty God. Joseph refused the lures of the wife of Potiphar because he was a smooth stone. He said he could not compromise and sin against God (Genesis 39:9). This statement landed him in prison, yet God was waiting for him there. Colossians 3:5-6 says this:
“Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry: For which things’ sake the wrath of God cometh on the children of disobedience:”
As a weapon of the Mighty, you should be able to control your body. Anyone who wants to operate under the anointing of the Most High God must not only love righteousness, but must hate iniquity. To deal with the Goliaths of this world, you need to become a smooth stone. If you discipline yourself enough to be a weapon of the Almighty, the enemy will always fail against you. Allow the Almighty to help you pass through fire. God is interested in you and wants to bless you. He wants to use you for His glory. If you permit Him, He will do it. He can use the fire of the Holy Spirit to burn away any dross from your life so that what remains is pure and smooth.