So the sin I would imagine you are talking about is a willful act against god's law?
I'm trying to collect my thoughts on this, so if you could bear with me here a little.
The original test was to obey Jehovah, one rule, don't eat from this tree. Adam and Eve failed. Then, people living nearly a thousand years, sinned, and there's flood because of the sin. (What sin though? no more tree). Then with mosses we get a rulebook. Then with Jesus this gets changed into two rules.
Then Armageddon and..
Jesus? 1000 year reign. Do we get new rules? The same Two Rules?? Or another tree? If we break them do we have a chance to repent, being of a perfect mind, we would only make the correct decisions to start with? If we are to live the rest of the reign do we become the new temptation?
-Here's something else, Adam had no free will as his entire experience base was given to him by Jehovah, so, any decision he made was based on Jehovah's cognitive implant. So, If the perfect Adam given his life and experience from Jehovah sinned, and, <>some<> perfect people in the future NEVER sin. Could we presume that the only way to attain perfect non-sinning humans is to let them be born into sin? If they are born into this world with Jehovah's implants, their always going to sin. 100% record so far. Jesus was perfect, but had sinning human parents as early guides.
Just some thoughts
Steve.