'Servant' in the Bible

From: Paul, a servant of God, and also an apostle of Jesus the Messiah, to bring the faith to those chosen by God, along with full knowledge of the truth that leads to godliness,

Because an overseer is God's servant manager, he must be blameless. He must not be arrogant or irritable. He must not drink too much, be a violent person, or make money in shameful ways.