Authority
The concept of authority seldom appears in the Old Testament. It is used predominantly in the New Testament, where the word exousia [ejxousiva] functions in at least four ways.
First, authority is the freedom to decide or a right to act without hindrance. All such authority begins with God, for there is no authority except from God ( Rom 13:1 ). God has the right to mold the clay as he wishes ( Rom 9:21 ) and to set times and dates ( Acts 1:7 ). God gave Paul the right to preach the gospel ( 1 Co 9:18 ). Believers have the right to become children of God ( John 1:12 ), and they have freedom with respect to the law ( 1 Co 8:9 ). While authority is valueless without the power to make it effective, we can make a fine distinction between the two concepts. This first understanding of authority, then, is distinct from power and refers primarily to a prerogative.
Second, the concept of authority refers to the power, ability, or capability to complete an action. Jesus was given the authority to forgive sins ( Matt 9:6-8 ) and to drive out spirits ( Mark 6:7 ). Jesus gave seventy-two disciples the authority to trample on snakes and scorpions ( Luke 10:19 ). Simon sought power to grant the Holy Spirit ( Acts 8:19 ). Satan has authority to function within the parameters established by God ( Acts 26:18
Third, the word "authority" is used with reference to delegated authority in the form of a warrant, license, or authorization to perform. Jesus was asked by whose authorization he taught ( Matt 21:23 ). He was granted authority for his ministry from God the Father ( John 10:18 ). Saul was sent to Damascus to persecute Christians by warrant of the priests ( Acts 26:12 ). God gave the apostles license to build up the church ( 2 Co 10:8 ).
Fourth, by a natural extension of meaning, exousia [ejxousiva] sometimes denotes the sphere in which authority is exercised. God has established spheres of authority in the world, such as civil government. Jesus was handed over to the official power of the governor ( Luke 20:20 ). When Pilate learned that Jesus was under Herod's jurisdiction or authority, the governor sent him to Herod ( Luke 23:7 ). Rulers and kings have their spheres of influence ( Ro 13:1 ), as does Satan ( Col 1:13 ), but Christ has been placed above all realms of authority ( Eph 1:21 ). More often exousia [ejxousiva] refers to the power employed by rulers or others in high positions by virtue of their office, such as civil magistrates ( Titus 3:1 ). This use of authority indicates a social relation between at least two individuals where one is the ruler. The subordinate in the relationship accepts the ruler's orders, not by external constraint but out of the conviction that the ruler is entitled to give orders and that it is the duty of the subject to obey and recognize the authenticity of the ruler's position and orders.