If the blood of Jesus was shed to forgive the disagreements (sins) of all men, then every single sinner on earth will be saved and there will be no need to preach and teach the Evangel of repentance to hasten the second coming.
True! Jesus died for remission of sins but He says that those who believe and keep all that He teaches and are baptized will be saved but that those who do not believe will be damned.
If you claim to believe in Jesus but disagree in one doctrine with Moses and the Prophets, the blood of Jesus was not shed for you because you are disobedient.
Daniel 12:2 ASV
(2) And many of them that sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt.
John 5:28-29 ASV
(28) Marvel not at this: for the hour cometh, in which all that are in the tombs shall hear his voice,
(29) and shall come forth; they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of judgment.
Matthew 22:14 ASV
(14) For many are called, but few chosen.