Warren Wiersbe, in his book titled, On Being A Servant of God, page 39-40, penned these words, " Remember you are God's sword-His instrument-I trust a chosen vessel unto His name. In great measure, according to the purity and perfections of the intruments, will be the success. It is not great talents God blesses so much as likeness to Jesus. A holy minister is an awful weapon in the hand of God".
Christian service means invading a battleground, not a playground; and you and I are the weapons God uses to attack the enemy. When God used Moses' rod, He needed Moses' hand to lift it. When God used David's sling, He needed David's hand to swing it.