David took five smooth stones, but four remained in the bag. Only one was used to defeat the enemy. The Church has a fivefold office—those made smooth by the trials of life for ministry: apostles, prophets, evangelists, pastors and teachers (see Eph. 4:11). But only one stone goes outsideof the Church to face the enemy: the evangelist and those he has equipped to do the work of ministry. Be a lively stone.