a person cannot know they are saved - they must entertain the possibility of error

Thank you for the clarification. And since the subject as defined by you is so broad as to be impossible to debate all inclusive and since your opening is New Testament based I take it that when we add- "Your New Testament opening argument # 1" + "Your definition argument #2" = salvation: (X + Y = S) Now we must be brief because of the limit of 2 postings left with limited amount of characters per posting. So I will choose to only debate 1 person listed in your opening as to the subject of Christian New Testament Salvation- Saul of Tarsus better know to modern Christians as Paul Saul of Tarsus was a first century Jerusalem bureaucrat Pharisee whose job was that of persecuting the early Christian Church. In keeping with Pro's definition of salvation in posting number 2 and since the New Testament had as yet not been written we can say that Saul of Tarsus thought that by persecuting the early Christian Church that he, Saul of Tarsus was doing a great service for the God of the Old Testament and therefore believed strongly that he was going to go to heaven, i.e. Pro's definition of Salvation in posting number 2 minus the Christian part in Pro's posting number 1 since the New Testament had not yet been written. Now the question is- Was it possible that Saul of Tarsus made an error concerning salvation, that Saul of Tarsus was not going to go to heaven after all? Or better yet, that Saul of Tarsus was going to lose his Old Testament salvation? So let us examine the account of Saul of Tarsus meeting Jesus of Nazareth on the Damascus Road- 1) Saul of Tarsus was struck blind 2) Saul of Tarsus had to ask who it was that Saul of Tarsus was speaking to 3) Saul of Tarsus had to be led into town by unbelievers in Christ because he was left blind by the person Saul of Tarsus spoke to What does this meeting between Saul of Tarsus and Jesus signify? Does it mean concerning Christian New Testament Salvation- A) Blindness, not knowing who you are talking to, having to have non-believers lead you away or B) This meeting between Jesus and Saul of Tarsus did not produce Christian Salvation If example A) is true then are there any other examples of someone coming into contact with Jesus and being struck blind, left wondering whom they are talking to and being left in the care of unbelievers, and that person who is blinded declared Saved in the Christian meaning of the word? Answer: No there are no other examples in all of the New Testament If example B) is true then are there any other examples of someone coming into contact with Jesus who simply come away from the contact and is not Saved in the Christian meaning of the word? Answer: Yes there are many examples of people coming into contact with Jesus and leaving Him without Christian Salvation both in the New Testament and throughout history. Conclusion of analysis of Saul of Tarsus losing his Old Testament Salvation after meeting Jesus is that Saul of Tarsus remained an Old Testament believer. Saul of Tarsus did not become a Christian during his meeting with Jesus Christ. Therefore- By Pro's opening argument and definition of salvation, Saul of Tarsus did not lose his Old Testament salvation.