Interestingly, it's yet another sacred word/symbol/image that's been co-opted from a concept actually meant to be divine and good.

For example, in the Greek New Testament of the Bible:

THELEMA- God's preferred, optimal, ideal will, vs. what's merely allowed) - with the sense of 'the divine good will and pleasure':

https://www.biblestudytools.com/lexicons/greek/nas/thelema.html

Some definitions:

what one wishes or has determined shall be done

of the purpose of God to bless mankind through Christ

of what God wishes to be done by us

commands, precepts

will, choice, inclination, desire, pleasure