4 The Ecumenical Council will be a meeting of the successors of the Apostles, men to whom the Saviour of the human race gave the command to teach all nations and urge them to observe all His commandments.(4) Its manifest task, therefore, will be publicly to reaffirm God's rights over mankind, whom Christ's blood has redeemed, and to reaffirm the duties of redeemed mankind towards its God and Saviour.
Source: Paenitentiam Agere (Vatican.va)