Hebrews 9:27.
RE: Hebrews 9:27.
True, one and only one life means the person can’t sweep aside sins and say “better luck next time in the next life.”
The temptations of evil have to be fought off in the one life to someday get into Heaven and avoid Hell.
Hindus and Buddhists are interestingly joined by the group of devout and observant Jews who believe in the book of Zohar and the teachings of Kabbalah, with sparks of goodness in the soul having to be worked upon to attain a final lifetime leading to the World To Come.
Other branches of Judaism don’t accept more than one life.
Sha’ar HaGilgulim (The Gate of Reincarnations) and the Zohar teach we require lifetimes for tikkun—repair or correction.