The Bible has much to say on this subject.
It is "summarized," as it were, by James 1:15 - Then, when desire has conceived, it gives birth to sin; and sin, when it is full-grown, brings forth death. [NKJV]
That is not what the bible say about sin: it says that All have sinned and come short of the glory of GOD Romans 3:23 and that is saying that once Adam sinned all that was born after him has sinned once they was born but the only person that didn't sin is Jesus Christ the son of God [KJV]
No, He didn't. He expiated ALL the sin of Mankind - ever. Did he deliver Mankind from its susceptibility to being enticed to sin? No. Did he remove the effects of the sin in the world up to that time? No. Did he remove the effects of the sin in the world after His time? No. But He promised that there will come a time when those issues will be dispatched, and sin and its effect - death - will be no more. Just give Him time.
rebellion
that sin and blasphemy are bad and and blasphemy is the only unforgivable sin
Nowhere in the Bible does it say that.
The Bible does not explicitly say that no sin is greater than another. However, it does teach that all sins separate us from God and that the consequences of sin are serious.
no
Original sin as referred to in the Bible, and in sermons, is the disobedience of Adam to God when He told him not to eat of the tree of the knowledge of good and evil. This was the first sin that man committed, which plunged all of mankind into a constant state of sin, until God sent His only Son, Jeshua (Jesus in English) to redeem all of mankind back from all sin. So the first sin and the original sin are the same.
The Bible says very clearly that rebellion is like witchcraft. It says that like witchcraft is a sin, so is rebellion a sin.
James 4:17 - Therefore, to him who knows to do good and does not do it, to him it is sin. [NKJV]
The Bible does not explicitly state that no sin is greater than another. However, it does mention that all sins separate us from God and that the consequences of sin are the same, regardless of the type of sin committed.
My apologies if I am mistaken, but I do not believe that phrase appears anywhere in the Bible.
In the Bible a person who is saved doesn't have to face the coming judgment on sin. Throughout history God has judged the sin of mankind e.g The world was judged by the flood, Noah and his family were saved in the ark. The nation of Egypt was judged, but the Israelites were saved.