Will-Worship
International Standard Bible Encyclopedia · James Orr and contributors
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.
Source of the article
International Standard Bible Encyclopedia — James Orr, general editor and contributors; CrossWire SWORD module ISBE 2.2
Bible Strong digital edition from CrossWire module 2.2; historical scholarship originally published in 1915