October 11, 1962 Blessed Pope John XXIII opened the Second Vatican Council
In his opening address he stated that "the greatest concern of the Ecumenical Council is this: that the sacred deposit of Christian doctrine should be guarded and taught more efficaciously."
To mark this anniversary Pope Benedict XVI today opens THE YEAR OF FAITH following the same theme calling for an entire year dedicate to a New Evangelization.
On the website of the US Bishops Conference there is more information and resources for how we can live this Year of Faith.