Source : Webster's Revised Unabridged Dictionary (1913)

Religiously \Re*li"gious*ly\, adv.
   In a religious manner. --Drayton.

Source : WordNet®

religiously
     adv 1: by religion; "religiously inspired art" [syn: {sacredly}]
     2: with extreme conscientiousness; "he came religiously every
        morning at 8 o'clock" [syn: {scrupulously}, {conscientiously}]