E36 - The Baptism of Our Lord

Baptism is one of the fundamental Christian rituals, honored and held in high esteem by all Trinitarian faiths.  But what is baptism?  Is it simply the act of immersion in water, or is it something more?  And why did Christ, God incarnate in the world, undergo this process at the hands of his cousin John who, in his own words, was "unfit to kneel down and untie His sandals" (Mk 1:7-8)?  Father Cochran joins Nicholas to further enlighten us on the baptism of our Lord.