The Bible is very clear, it is the word of God and His words are faithful and true because they come from our Creator God of all things.
So it is good that we be not disrespectful, or that we be talking about what we want, talking about our God without brakes on our mouths, because with this we could commit the unforgivable sin.
What is this sin that the Bible says is unforgivable? It is blaspheming against the Holy Spirit:
30 He that is not with me is against me; and he that gathereth not with me scattereth abroad.
31 Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.
Matthew 12:30-31 (KJV)
At one point a blind and dumb man was brought before Jesus, he was healed, but the scribes and pharisees said in their minds that Jesus cast out demons in the name of beelzebub, prince of demons.
The Bible says that Jesus knew their minds and listened to everything they said, that is why Jesus, when listening to their minds at that moment, tells them that blasphemy against the Holy Spirit is unforgivable.
Brothers, let us be very careful with what we say, even with what we think, and even more if it is referring to our God and the Holy Spirit. Let us have the utmost respect before it and ask for understanding and wisdom so as not we do not commit this unforgivable sin.