Impossible questions. Youd have to write hundreds of pages, including the thoughts of every religion ever.
Best answers would be to look at commonality between multiple religions. Every religion contains a “creator,” a list of morals, and a reward/ punishment after death.
Religion will not save you—it is a trap. Jesus is the only one, who gives an answer to the problem of sin. He is the only one, who died to save me, and to have a relationship with me. There are answers, simple enough for a child—in fact, Jesus said to the children, “Come.”