When you say sins what do you mean by sins?
To me repent and believe the gospel is a calling to faith.
Repent is to change ones mind concerning Jesus and then place your faith in him.
Jesus said he had to go away in order for the Holy Spirit to come to convict the world of its sin.
John 16:8-9
What does baptism do?
It removes all your sins up to that point.
After that you coness them to God since we'll be sinning our Whole life, although we do not want to and do our best not to.
So there is SIN: Orignal Sin, Sin Nature, The Flesh, call it what you will.
Then there are sins: Sins and sinning is what we do every day. Lying, stealing, treating someone badly, murder, etc.
maybe we could say it's breaking Jesus's two commandments, which include every other commandment.
Yes. It is a CALLING TO FAITH, as you understand it also.
It's not grieving the Holy Spirit by not believing and turning from God.
Repent is to turn away from satan and TO JESUS. So you could understand your way, no problem.
And when He has come, He will convict the world of sin, and of righteousness, and of judgment: of sin, because they do not believe in Me;
Now you say the primary sin is that of unbelief.
I'd say that Mathew 12:31-32 agrees with you.
Unbelief is the unpardonable sin. I guess that would make it the primary sin.
Fran