No one was excluded.... John 3:16 clearly states if we should believe.... we will be granted eternal life.
We are saved by God’s grace and grace alone... There is nothing man can do to earn it... Thus, they can never give glory to themselves.... For it is God’s alone....
I was born into the Catholic Church and by the time I was 14, I decided that going the "agnostic route" made as much sense. Took me another 35 years to clearly hear the message of the Gospel in a non-denominational church and be saved.