zealous

adj. excited, passionate

Zealotry was a movement in first century Judaism, described by Josephus as one of the "four sects" at this time. The term Zealot, in Hebrew kanahi (קנאי, frequently used in plural form, קנאים), means one who is on behalf of God. The term is Greek in origin. The Zealots were a religious group and were frequently in rebellion.
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Adjective
1. marked by active interest and enthusiasm; "an avid sports fan"; "a great walker"; "an eager beaver"
(synonym) avid, great, eager
(similar) enthusiastic

(a.)
Filled with, or characterized by, zeal; warmly engaged, or ardent, in behalf of an object.
  

(a.)
Filled with religious zeal.
  

zealous; burning
  

zealous