"...only me is life and salvation."

Jesus spoke in Aramaic. His words were not recorded immediately when He spoke them, either, but were remembered and retold orally for decades at least before they were ever written down. When they were written down, I recall they were translated into Greek. Subtle differences, which you surely must understand as you are conversing in English, come in translation.

I believe what Jesus actually meant by the statement I quoted above, is that following the example He provided by living his life as a service to others is salvation. It is extremely difficult to tell, but likely that translation from Aramaic, to Greek, to Latin, and to English, and finally to Korean, certainly is sure to exacerbate the potential errors decades of oral recollections may have lent his original words.

Peace!