The word for idolatry in Revelation 21:8 means idol worship which is paid for - worship for money - idolatrous = idol + latris where latris means a hired worker. People, you would think, should not be encouraged to worship God the way they worship idols - as hired and paid staff. On the other hand the word latris does occur many times in scripture in reference to the worship of God. https://biblehub.com/str/greek/3000.htm So worshipping God as a hireling is still acceptable enough. Over time servants progress to friends as they learn the Master’s will and willingly do as He wills.
