Question

The idea of an afterlife and the belief that salvation was achieved by good conduct in this life were ideas associated with the worship of

Answer 1

there are many different religions out there and I'm not saying one is better than the other but the answer is:
The Worship of God/Lord from the Bible from the religion of Christianity. Along with the after life salvation you need to believe in him & his son Jesus who died for our sins.
Hoped this helped and remember I'm just helping And not saying one religion is better than the others.