Saved from what exactly? Death? If that were true what are graveyards for? Everything that is, eventually isn't. And if believing in JC is all that's required to have everlasting life, how do you explain the long history of human kind living and dying? If everyone that believed never died, where are they all?
And for the record, G-d doesn't ask us to believe in JC. The authors of the NT texts do. Because Yeshua was Jewish, and teaching Judaism, believing that somehow numerous basic tenets of Judaism suddenly changed and this new fella was another Moses requires an ignorance of what had already ben written. Namely numerous verses stating G-d's Laws remain in effect forever.
When Jesus said in John 6:29, “The work of God is this: to believe in the one he has sent.”
it was a reference to Deuteronomy 18:18, 19,
"I will raise up for them a prophet like you from among their fellow Israelites, and I will put my words in his mouth. He will convey all of my commands. I myself will call to account anyone who does not listen to my words that the prophet speaks in my name. "
And Jesus did teach obedience to the laws of God in exact same way that Moses originally taught to follow the law that has been lost to time ever since the death of Moses as he himself stated would occur.
"For I know that after my death you will turn aside from
the way that I taught you to follow." Deuteronomy 31:29
This shows two things. First , there was a particular
way to follow the law that the people would turn away from, and, what had become a thousand year tradition of following a literal interpretation of the law, sacrificing farm animals in a temple, obsessing over diet and fashion, mutilating penises, etc., was the wrong way to follow the law (as if that was hard to believe) by the time Jesus appeared to straighten things out, "make straight
the way of the Lord."
So what had become obsolete was the wrong way to interpret and apply the law not the law itself. The law itself had been restored to its original meaning and purpose and the promise of eternal life was brought within reach for all those who could accept the divine revelation that Jesus was sent by God to teach, that the meaning of the words used in the law were figurative in nature and the subjects hidden, hence "eat my flesh.", a direct reference to Kosher law.
" the kingdom of Heaven is like treasure lying buried in a field.
The man who found it, buried it again."