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Your question to a Mormon today is twofold. 1-Who exactly is Jesus Christ? 2-If you died today would you go to heaven? If a Mormon is to be completely honest, he won’t be able fulfill his obligations here on earth to attain full salvation. D&C 132:4 says you must practice polygamy or you’ll be damned.
Also – if Mormons truly believed in the redeeming powers of Jesus and what He did on that cross, there’d be no doubt in his/her mind about their salvation.
This humility they seem to have when asked about assurance in their own salvation is actually a sign that they’ve denied Jesus.
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“This full salvation is obtained in and through the continuation of the family unit in eternity, and those who obtain it are gods.” Mormon Doctrine, p. 670.