At judgement, are men condemned for sin or for unbelief?

[webdog]

By his knowledge shall my righteous servant justify many, for (because) he shall bear their iniquities.

Who shall lay anything to the charge of God's elect? It is God that justifieth. Who is he that condemneth? It is Christ that died, yea rather, that is risen again, who is even at the right hand of God, who also maketh intercession for us.

But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us. Much more then, being now justified by his blood, we shall be saved from wrath through him. For if, when we were enemies, we were reconciled to God by the death of his son, much more, being reconciled, we shall be saved by his life.

These are just a few instances in scripture where justification is tied directly to the cross.

While tied to the cross, justification is actually directly associated with faith.