The life of a Christian is a life of service to God. Despite his reluctance, Moses obediently returns to Egypt as spokesperson for God. Accompanied by his brother Aaron we learn that the nature of his service is to go and speak. Likewise God calls us to go and proclaim the Gospel. The reality of Moses' service is severe opposition and serious discouragement. Even though opposition is the reality for all christians serious about serving God, knowing that God is Jehovah enables us to persevere in our obedience.