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>> “So Eli, may I ask you to explain exactly what one must believe in order to be saved?” <<
You must “believe” on Yeshua in the manner stated in John’s first epistle.
IOW “believing” is living exactly as he lived; doing exactly as he did. (Keeping Torah)
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Salvation is a choice whether to trust and believe that Christ has “finished” the work to propitiate the Father. If we trust Him, not our works, we appropriate salvation.
Christ speaking to Nicodemus compared salvation to the look upon the brazen serpent in the wilderness. When we add to the work by requiring an aisle walk, a baptism, a repentance from overt sins, we subtract from His accomplishment.
It’s like requiring your daughter to pay fifty cents before she gets a gift at Christmas. It may not be much in comparison but it destroys the concept of grace.
Are you saying that I must "keep Torah" in order to be saved?