There's nothing to forgive, given that our 'sins' would have been part of God's initial design and therefore our sins are his. God should be the only one asking for forgiveness.
It could be a balloon. It could be Franky. It could be very fresh and clean. It could be those ways.

There is a way to know for sure: "If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness." - 1 John 1:9 King James Bible
"Our efforts" aren't enough to achieve forgiveness: "For by grace are ye saved through faith; and that not of yourselves: it is the gift of God" - King James Bible
So which is it - through grace, or through confession? The passages you've offered have different soteriologies.
§«
Ȥ

Does God forgive our sins?
Our efforts
to atone, even if sincere, are no guarantee to be accepted. Although I believe God is merciful and forgiving,
there is no way to know for sure
, how much.
There is a way to know for sure: "If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness." - 1 John 1:9 King James Bible
"Our efforts" aren't enough to achieve forgiveness: "For by grace are ye saved through faith; and that not of yourselves: it is the gift of God" - King James Bible

You know I'm not a believer, right?
Yup. I sure do.

In what terms do
you
define it?
You know I'm not a believer, right?
Since Mark 3:28-30 is the first appearance of the expression, I would defer to it, since the Markan author seems to have originated it. The other Synoptic authors copied nearly all of Mark into their texts but, not comprehending Mark's pattern, often broke up the pericopes and sayings and arranged them haphazardly, altering their meanings as they saw fit. The way the saying is juxtaposed in Matthew (repeated twice, in 12:31-32, immediately following 12:30 about 'gathering and scattering') suggests they may have interpreted it to mean anyone who didn't follow their specific sectarian view. The saying's positioning in Luke 12:10 seems to conflate the concept with denying Jesus (12:8,9), which would seem to contradict the saying's qualification that "whosoever shall speak a word against the Son of Man, it shall be forgiven him." Commentators have sometimes attempted to connect "the unforgivable sin" with different otherwise unconnected passages, but the Synoptics are the only place the expression occurs.
There's never been any agreement on what constitutes "blasphemy of the Spirit," the "unforgivable sin." A popular interpretation would suicide, although there's no biblical support for it. This article lists some three dozen of the other interpretations:
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Except that the bible nowhere defines what it calls "blasphemy of the Holy Spirit" in those terms
In what terms do
you
define it?

According to the Bible, the only unforgivable sin is the denial of His forgiveness. Or as CS Lewis put it, "You must have a capacity to receive, or even omnipotence can't give."
Except that the bible nowhere defines what it calls "blasphemy of the Holy Spirit" in those terms (see Mark 3:28-30, where it's said in response to the charge that Jesus has an unclean spirit).
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According to the Bible, the only unforgivable sin is the denial of His forgiveness. Or as CS Lewis put it, "You must have a capacity to receive, or even omnipotence can't give."

PotassiumMan,
Repenting means changing how you think on your life. If you see yourself as a sinner in need of a Savior, you have repented. Many people do not have that change of heart, mind and spirit and live their lives oblivious to the fact that they are sinners and need Christ.
And it is not that you were, or I was, a sinner. We ARE sinners, saved by grace.
If you trust in His promise and you believe that He is who He said He was, then you know that He has the authority to make the promise and He has the authority to keep the promise. And you can know how forgiving God is. Because Christ has taken on the penalty of ALL your sins, ALL your sins have been paid in full. He took upon Himself YOUR transgressions and imparted to you His perfection. The forgiveness of God is total and complete.
Now that's not to say that the Devil isn't going to try to convince you otherwise. Because you live in a corrupt and fallen world, some of your forgiven sins are ones you will commit today and many more you will commit in days to come. Satan will whisper to you and make you question because you commit and continue to commit sins. But you have repented from justifying those sins. You simply have to realize that those sins are real, those sins are serious, but those sins are paid in full by Christ. Grieve that you committed them after coming to a knowledge of Christ, try each day to be more like Him, but understand that you are forgiven in each and every time you fail, because your heart, your mind and your spirit have repented and know that they are wrong, but also that they have been covered by the shedding of His blood.
Hope that helps. If not, then please share your doubts with your congregation and let them pray for you, let them surround you and comfort you and encourage you.

Our efforts to atone, even if sincere, are no guarantee to be accepted.
This isn't necessarily true. I think Scripture gives a pretty good assurance that righteous people attain salvation, by definition a forgiveness of sins, despite their being sinful.
There's a basic outline to it that provides assurances. To worry about it without changing, repentant or not, though is a pointless endeavor.
Anyone sincere can be forgiven although it should be assumed there's no guarantee for anyone other than those who willingly choose to worship God.
Non-believers really only matter in relation to the devout.
If I were you, I'd wanna be me too.

He's not imposing anything on anyone Gozling.
Don't be a hypocrite.
All lined up - get your ducks in a row.

I will wait to hear that from him, as I don't trust anything that you say, sorry.
All lined up - get your ducks in a row.

Except he is American.
"Whether homosexuality causes less harm (than slavery) is debatable" -
Hada

Hope Tas doesn't mind
Mr. Gilley offered me a job, if I'd move to Branson, MO. Never did.
That would tag Tas to me as a citizen of the United States of America.
A non-Yank would not generally, automatically, write "Branson, MO".
It is not enough that I succeed. Everyone else must fail.

in your country people many of the same gullible stupid people voted for Trump!
Except that afaik, Tas-1010 is not an American.
All lined up - get your ducks in a row.

I said the same gullible people voted in that way as would be JW's.
No, you didn't.
All lined up - get your ducks in a row.

It is not enough that I succeed. Everyone else must fail.

Culinary delights of LongpigLol!!
www.jw.org
or
https://tv.jw.org/#en/home

I do.
I'm generally hostile to strangers with clipboards knocking on my door. Unless I'm short on food, and have made the crossover into the taboo culinary delights of longpig.
It is not enough that I succeed. Everyone else must fail.

Why should I have to?
Why should they have to read your mind and know to not come on to
your
porch?
Do you take the same line with the guys and girls with clipboards who want you to change your phone provider?
All lined up - get your ducks in a row.

I have read almost everything you have posted on this board since I got here and it is nonsense.

To sensible sane people it is patent nonsense
You don't know
what
our message is, because you've never listened!
That is prejudicial, bigoted ignorance, calling something nonsense without knowing what it is.
www.jw.org
or
https://tv.jw.org/#en/home

Why do you break the law and trespass to do this?
It is both illegal and immoral.
To you it might make sense, yet what gives you the right to prevail on others with your opinion?
To sensible sane people it is patent nonsense and your entering our property to tell us your opinions is at best an invasive intrusion, followed by an invasion of privacy and at worst illegal, breaking the secular law.

The Author of morals is God; Divine morals and laws supersede any law of man!
So if man wants us to do something God doesn't, as in killing people, we refuse.
The obverse is also true: if man tells us to
stop
doing something that God wants us to do, like preaching to others about His Kingdom (as Jesus did), we obey God, and keep on.
Sorry you don't understand that.
Our message we share with others is very different from what you might hear in church, you would be surprised. I was when I first heard it.it made sense.
www.jw.org
or
https://tv.jw.org/#en/home