Thayer's Greek Lexicon

 1. to render or acknowledge, or to be venerable or hallow
2. to separate from profane things and dedicate to God
  1) consecrate things to God
  2) dedicate people to God
3. to purify
  1) to cleanse externally
  2) to purify by expiation: free from the guilt of sin
  3) to purify internally by renewing of the soul