Are there sins that cannot be pardoned?
ANSWER:
“but anyone who blasphemes the Holy Spirit will never be forgiven. This is a sin with eternal consequences.” Mark 3:29.

IMPLICATION:


The above text are words of Christ on this subject, showing that there are “Unpardonable sins”, which are sins against the Holy Spirit. Sometime ago i asked a priest “Does this mean that God REFUSES to forgive this sin” ?
The priest could not give a satisfactory conclusive reply, until one day after years of research and prayer, i stumbled upon an explanation.
SINS AGAINST THE HOLY SPIRIT
They are summed up below, but what is common is a deliberate denial of God and his light:
(1) Despair;
(2) Presumption;
(3) Impenitence or a firm determination not to repent;
(4) Obstinacy;
(5) Resisting divine truth known to be such; and
(6) Envy of another’s spiritual welfare.
HERE IS WHAT I LEARNT:


God does not REFUSE forgiveness. Rather, when one sins against the Spirit of God, he CASTS GOD OUT of himself and SHUTS THE HEART TO HIS LIGHT. So that such a person is UNABLE TO ASK for mercy anymore. The “Unpardonable” does not mean God changes from “Forgiving Father” to an “Unforgiving Judge”, so that he turns his face from someone weeping and begging for mercy, NO !!!. He is Always FORGIVING. Even those who are in Hell cannot ask for pardon, that is why they cannot be forgiven.
The GRACE of remorse/contrition is very expensive gift of the Holy Spirit, given unto the sincerely repentant ones. I tell you, there are many Catholics today who have shut their hearts to God’s grace by continuous abuse of Sacraments for instance and other sins; they personally kill the voice of their consciences by refusing God’s light/call to repentance so many times, that those sins become “Normal” and even “A way of life” to them.
For this grace is meant to rise our sensitivity to sin and make us weep for our sins, but for someone who is dead in sin, he cannot possibly weep or feel really sorry for his sin. He may even boast about his sins to his friends and feel like a “big Shot”.
This is what it means to commit an “Unpardonable” sin. Whenever such a sinner opens his heart to God’s light, he sees his sorry state, and confesses with all his heart, God Forgives him for sure, for he promised:
“Even if your sins be as red as scarlet, i shall make you as white as wool”. Isaiah 1:18
Source:https://caticor.com/unpardonable-sins-can-god-actually-refuse-pardon/

OP
God is not mocked,Whatever you sow, you shall surely reap.
If you like continue deceiving yourself.
Soft walk

some of the pharisees of that time said that Jesus
done His miracles by the power of beelezelbub-satan-the devil

they said the spirit in Jesus was the spirit of satan

Jesus said those that sin against the Holy Spirit will never be forgiven



(Mat 12:22)  Then was brought unto him one possessed with a devil, blind, and dumb: and he healed him, insomuch that the blind and dumb both spake and saw.

(Mat 12:23)  And all the people were amazed, and said, Is not this the son of David?

(Mat 12:24)  But when the Pharisees heard it, they said, This fellow doth not cast out devils, but by Beelzebub the prince of the devils.


(Mat 12:31)  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.

(Mat 12:32)  And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come.



sinning against the Holy Spirit (as some pharisees did in saying that the spirit in Jesus was the spirit of satan)
is sinning against God





also ananias and his wife sapphira lied not only to the apostles, but they lied to the Holy Spirit-God:


Act 5:1  But a certain man named Ananias, with Sapphira his wife, sold a possession, 
Act 5:2  And kept back part of the price, his wife also being privy to it, and brought a certain part, and laid it at the apostles' feet. 
Act 5:3  But Peter said, Ananias, why hath Satan filled thine heart to lie to the Holy Ghost, and to keep back part of the price of the land? 
Act 5:4  Whiles it remained, was it not thine own? and after it was sold, was it not in thine own power? why hast thou conceived this thing in thine heart? thou hast not lied unto men, but unto God. 
Act 5:5  And Ananias hearing these words fell down, and gave up the ghost: and great fear came on all them that heard these things. 
Act 5:6  And the young men arose, wound him up, and carried him out, and buried him. 
Act 5:7  And it was about the space of three hours after, when his wife, not knowing what was done, came in. 
Act 5:8  And Peter answered unto her, Tell me whether ye sold the land for so much? And she said, Yea, for so much. 
Act 5:9  Then Peter said unto her, How is it that ye have agreed together to tempt the Spirit of the Lord? behold, the feet of them which have buried thy husband are at the door, and shall carry thee out. 
Act 5:10  Then fell she down straightway at his feet, and yielded up the ghost: and the young men came in, and found her dead, and, carrying her forth, buried her by her husband. 
Act 5:11  And great fear came upon all the church, and upon as many as heard these things.

cjfbn:
OP
God is not mocked,Whatever you sow, you shall surely reap.

No doubt about that. If u sow orange tree u will always get orange fruits but if you decide to cut it down and plant mango tree u will start getting mango fruits.