"Christian service means invading a battleground, not a playground; and you and I are the weapons God uses to attack and defeat 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. When God builds a ministry, He needs somebody's surrendered body to get the job done."- Warren Wiersbe
Source: Wiersbe, Warren W. On Being A Servant of God. Nashville: Thomas Nelson, Inc., 1993. Pg. 40.