Actually, it does: Mark 3:28–30: "Truly I tell you, people will be forgiven for their sins and whatever blasphemies they utter; but whoever blasphemes against the Holy Spirit can never have forgiveness, but is guilty of an eternal sin... "
(cf Matthew 12:30-32 and Luke 12:8–10)
Ok, I knew this was coming, actually it is not saying what I was talking about. This is the only act that keeps a person out of heaven, rejecting God. There are no other classifications for sin. Murder, lie, steal, adultery are all stated equally in the 10 Commandments. Murder ranks no different from a lie. Too many people want to believe that their sin is just a little sin, wrong, a sin is a sin.
James even equates Murder with Adultery.
James 2:9 But if you show partiality, you are committing sin and are convicted by the law as transgressors.
10 For whoever keeps the whole law and yet stumbles in one point, he has become guilty of all.
11 For He who said, “DO NOT COMMIT ADULTERY,” also said, “DO NOT COMMIT MURDER.” Now if you do not commit adultery, but do commit murder, you have become a transgressor of the law.
Sin is sin, period. Now how many hail Mary do I have to say, oh, 2 for this sin, 7 for that sin.....
New American Standard Bible: 1995 Update (La Habra, CA: The Lockman Foundation, 1995), Jas 2:9–11.