The disciples were commissioned to make disciples of all nations. But they were being sent into a spiritual graveyard to preach to those who were spiritually dead. They had no power to grant life. That is God's prerogative. Without the regenerating work of the Spirit, the Great Commission would be the Great Failure. But, just as Jesus promised, life would be granted to all the Father has given to the Son. The disciples can expect success because Jesus, the Victor over death, has all authority in heaven and on earth.