Greek word
ethelothrēskeía
ἐθελοθρησκεία
What it means
voluntary piety, i.e. sanctimony
voluntary (arbitrary and unwarranted) piety, i.e. sanctimony
Where it comes from
from thélō (θέλω) and thrēskeía (θρησκεία)
How the King James translates it
Every place it appears 1
Colossians2:23