THE FULL ARTICLE — from the International Standard Bible Encyclopedia

The International Standard Bible Encyclopedia (1915), general editor James Orr — public domain, printed whole.

In Col 2:23, "a show of wisdom in will-worship," for ethelothreskia), a word found nowhere else but formed exactly like "will-worship": worship originating in the human will as opposed to the divine, arbitrary religious acts, worthless despite their difficulty of performance.