According to SCRIPTURE, anyone who sins has the ability to repent of those sins and if that is accomplished, it is then up to God to sort it out.
In
Mathew 27:3 (KJV) we are told that Judas was filled with remorse and we can probably take that as Judas repenting. There is also good evidence in the original Greek manuscripts that Judas was murdered by the temple priests rather than committing suicide. Judas threw the silver coins back in the faces of the temple priests who had contracted with him to betray Jesus. Those priests could NOT allow Judas to tell the true story to anyone, so they killed him to silence him. Your insides do not gush out unless you have some "help".
Acts 1:18 (KJV)
Cain is not written of directly in scripture past
Genesis 4 and his possible repentence is not spoken of. However, it is highly unlikely that he did repent based upon other scripture. Christ was speaking to the Pharisees and Kenites and mentioned something quite interesting in
John 8:44 (KJV). < (Click highlight for text). Christ would have known if Cain had repented, so it is a pretty good bet that Cain was not remorseful, while Judas was.
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