DURING a speaking tour in the United States, a consistent warning kept rising to the forefront of my thoughts: do you know the voice of the Shepherd? Since then, the Lord has spoken in greater depth in my heart about this word, a crucial message for the present and coming times. At this time in the world when there is a concerted attack to undermine the credibility of the Holy Father, and thus shake the faith of believers, this writing becomes ever more timely.