All sins are forgiven of men, except the unforgivable sin.
Matthew 12:32 reads:
And whosoever speaketh a word against the Son of man,
it shall be forgiven him: but whosoever
speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come.
THEREFORE, THE REPENTANCE THAT ONLY NEEDS TO BE DONE ONCE IS
NEVER THE REPENTANCE ON NON BELIEF TO BELIEVING ON JESUS AS YOU CLAIM,
BECAUSE NON BELIEF TO BELIEVING ON JESUS IS FORGIVABLE!!!
Study your Bible.
No you are mixing a few concepts here, Like I said without the shedding of Blood there is no remission, So Jesus offered himself a sacrifice and Shed his blood for the remission of sins He proved his Victory by rasing from the dead, now when the Holy Spirit comes he will reprove the world of sin, and of righteousness, and of judgment:
John 16:7 Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.
8 And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:
9 Of sin, because they believe not on me;
10 Of righteousness, because I go to my Father, and ye see me no more;
11 Of judgment, because the prince of this world is judged.
So If People hear the Truth of the Gospel Message and reject it, They will be Guilty of the Sin of unbelief, If they Die in that state, they won't be forgiven in the next life, So the only Sin you need to Repent of before you Die is, not believing on Jesus, that's the unforgivable Sin, No matter how you word things backward doesn't bring in more unforgivable sins, There is only one, You believe it or you reject it, The repentance that saves is from unbelief to belief in Jesus, You don't repent of that