What does ἐθελοθρησκεία (ethelothrēskeía) mean in the Bible?
Ἐθελοθρησκεία occurs once in the local New Testament evidence, in Colossians 2:23. The verse describes regulations that have an appearance of wisdom in self-imposed worship, false humility, and harsh treatment of the body, yet lack value against fleshly indulgence.