These original mythical expressions by the ancients were delusional by virtue of their own imagination and ignorance of the world in which they lived, as an expressive need to allure people around this specific faith /worship. Although as it is noted by ancient historians, a Messianic savior god was not exclusively unique to the Jews and following Christians.
There was a ongoing competition between ancient civilizations to create the most powerful reverential god and appealing god and to strengthen and garner support around these belief systems.
To also solidify the power around the spiritually connected Seers ( High Priests) to these god(s).
For example .... That's why Jesus is said that this generation will not pass away and many will not experience death , when he was supposedly talking to his listening followers.
Pretty appealing don't you think ?
As for cultivating followers under this appealing belief worked and continues to work 2000 years further on to this day.
Various men have used these ancient mythological expressions to build a following around themselves as to circumvent a stature of self empowerment as well to the procurement of money.
For example J Rutherford who was the individual who created the JWS name and identity, was a lawyer /businessmen, amateur bible theologian, had this personal intent himself which one could say he successfully achieved.