will worship

Concise Bible Dictionary:

Worship that springs from the will of man and which satisfies the flesh (Col. 2:2323Which things have indeed a show of wisdom in will worship, and humility, and neglecting of the body; not in any honor to the satisfying of the flesh. (Colossians 2:23)). Ordinances commanded by man come under this category, though their observance may be thought to be acceptable to God by the worshippers.

Strong’s Dictionary of Greek Words:

Greek:
ἐθελοθρησκεία
Transliteration:
ethelothreskeia
Phonic:
eth-el-oth-race-ki’-ah
Meaning:
from 2309 and 2356; voluntary (arbitrary and unwarranted) piety, i.e. sanctimony
KJV Usage:
will worship