Hello,
No worries, I would like also to apologise for my late reply since I have been occupied with my work and have not opened or replied messages. Anyway, I will answer your question.
John 1:1 said that '
In the beginning was
God,
the word was with
God,
the word was
God', which means God is the one who give the word of the truth.
How can be so sure that God is the truth? First of all, He never lies, what He has prophesied, He fulfilled the prophecies 100%.
Isaiah 14:24:
The Lord Almighty
has sworn,
“Surely, as
I have planned, so
it will be,
and as
I have purposed, so
it will happen.
Numbers 23:19:
God is not human, that he should lie,
not a human being, that he should change his mind.
Does he speak and then not act?
Does he promise and not fulfill?
Amos 3:7:
Surely the
Sovereign Lord does nothing
without revealing his plan
to
his servants the prophets.
These three verses showed us that God speaks the truth, and before He fulfils it, He reveals it first to His servants, then, there will be time when the prophecies are fulfilled (John 14:29: I
have told you now
before it happens, so that
when it does happen you will believe)
In regards to your question regarding what is blaspheming the Holy Spirit, we have to know that there are two kinds of spirit. The first one is God's spirit and the second one is the evil spirit. In Ezekiel 28:13-17, the evil spirit was once the cherub that God has chosen. Cherub means God's archangel. However, due to wickedness inside Him, He was cast down and became an evil spirit. The evil spirit has controlled the world since Adam fell into the sin (Gen 3). In Genesis 3, the serpent deceived Adam and Eve by saying that they can eat the fruit from the tree in the middle of the garden (the tree of the knowledge of good and evil), which means, the evil spirit spoke lies, and we should know that everything that was spoken outside of the Bible, it is a false truth and by adding or taking away the word, it is blaspheming the holy spirit, which means blaspheming God who is the source of the truth.
Just for additional note, you may read Revelation 22:18-19: I warn everyone who hears the words of the prophecy of this scroll:
If anyone adds anything to them,
God will add to that person the plagues described in this scroll. And i
f anyone takes words away from this scroll of prophecy,
God will take away from that person any share in the tree of life and in the Holy City, which are described in this scroll.
I know it is quite a long explanation, but hope this answers your question. Anyway, one of my friends will open a Bible class that will help you to answer your questions regarding the Bible. So, if you are interested, please do contact me.