If the Jews had to believe and do works to be saved then why would the Lord Jesus tell them that it only took believing to be saved?:
"Very truly I tell you, whoever hears my word and believes him who sent me has eternal life and will not be judged but has crossed over from death to life" (Jn.5:24).
And why would He say that it is His words that bring life if His words alone were not enough to bring life?:
"It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life" (Jn.6:63).
Will you answer that?
Prove that you can answer my questions in an "intelligent" manner.