It
is Biblically true.
Without the shedding of blood there is no forgiveness of sins (Heb. 9:22).
So for there to be further forgiveness of sins (were it needed, which it is not), there would need to be further shedding of Christ's Blood.
The Scriptures are clear that
[*=1]That's not going to happen (Heb. 7:27, Heb. 10:10), and
[*=1]To suggest that further forgiveness is needed is to subject Christ's to open shame, crucifying Him all over again (Heb. 6:6)
I really like this train of thought:
Has God dealt with the sins of the world?
Yes.
How many times did He deal with it?
Once.
Have your sins been judged?
Yes.
Where were they judged?
At the Cross.
What was the verdict?
Guilty.
What was the punishment?
Death.
Who took it?
Jesus.
How much of it?
All of it.
How much is left for you?
None.
(Quoted from Bob George, The New Covenant Explained http://bobgeorge.net/?ddownload=1833)
There is no fear of punishment because our forgiveness is complete (Heb. 7:25, 1 Jn. 4:13-19)
Confession of sin is certainly fine (and healthy) to do, but is not necessary for those in Christ to do to procure forgiveness - forgiveness is a done deal if you are in Christ - there is no more shedding of blood necessary on your behalf - what Christ accomplished WORKED.
Furthermore, there are no instructions to
believers to confess sins to God, but to each other, and that not publicly, but one to another so that they can pray for you (James 5:16).
We can come to the Throne of Grace with boldness and confidence for help in our times of need BECAUSE we are forgiven and God is not holding our sins against us (2 Cor. 5:19). Contextually that's specifically in our times of weakness - sin (Heb. 4:14-16, Eph. 3:12). So while confession to God of our sins is not necessary for forgiveness, it is certainly healthy to come to His Throne of Grace and talk to Him about our struggles with sin and seek His help.
-JGIG