You have been somewhat misinformed.

First, there are not "so many rules" in true Christianity. Some churches have added all numbers of man made rules to Gods religion, something Christ admonished His followers against.

Secondly, willful sin and repentance as one willful act gets one no where near heaven.
That is a nonsensical roman catholic notion that has "infected" many so-called christain churches.

Its true that any sin can be forgiven, except one, BUT no one will fool the only perfect Judge when it comes to willful sin and insincere phony repentance.

That being said, it is also true that a murderer or similar wicked person can repent and be forgiven but that act MUST be genuine, not some plan to sneak it in before death. Thats neither logical or Biblical.

True repentance involves more then saying "I am sorry"

God calls for mankind to repent AND turn from ALL sin....immediately.

"Choose ye THIS DAY whom ye will serve...."

"Repent ye: for the kingdom of heaven is at hand."

"The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son: the righteousness of the righteous shall be upon him, and the wickedness of the wicked shall be upon him.
But if the wicked will turn from all his sins that he hath committed, and keep all my statutes, and do that which is lawful and right, he shall surely live, he shall not die.
All his transgressions that he hath committed, they shall not be mentioned unto him: in his righteousness that he hath done he shall live."

"But when the righteous turneth away from his righteousness, and committeth iniquity, and doeth according to all the abominations that the wicked man doeth, shall he live? All his righteousness that he hath done shall not be mentioned: in his trespass that he hath trespassed, and in his sin that he hath sinned, in them shall he die."


"Thou shalt not tempt the Lord thy God..."