It's obvious to me that there are several connotations given to the word "world" in Scripture.
The question is, what "world" does Satan have sway over? I would say it is anything that
is opposed to God. But, God has his own world (anything not opposed to himself)(Rev. 15:2-4)
"God so loved the world that he gave his one and only Son, that whoever believes in him should not perish
but have eternal life." John 3:16 So, the question is: who's world do I choose?