Re: Jewish Afterlife
Jews do believe in a world to come (Olam Ha-Ba) and Paradise (Gahn Ehydehn/Jannah) and Hell (Gehinnom/Jahannam).
The “king” you refer to is the Christ or Messiah (Moshiach/Maseeh) who they are still waiting for. Muslims and Christians believe that 'Eesa (Jesus) :as: was the real Christ or Messiah (Christians took it a step further and gave him a share in God’s divinity) but those who remained Jews didn’t accept him at all and think the real Messiah is still to come.
Muslims believe that the False-Messiah/Anti-Christ (Dajjaal al-Maseeh) will be from the Children of Israel and they will comprise most of his followers before the real Christ ( Jesus :as: ) descends from the heavens and finishes him off.
Makes sense since they’re still waiting for a Messiah and will probably accept the False-Messiah.