The Greek word that is translated as "justified" means "to be $made and declared righteous". It also means "to be declared guiltless by God". This is such a wonderful reality, so powerful-that Jehovah sees all who are born again as being without any guilt whatsoever. He has completely wiped our. Sins out of existence and cleared us of all guilt through the blood of Jesus Christ.
"Therefore let it be known. To you, brethren, that through this Man is preached to you the forgiveness of sins; and by Him everyone who believed is JUSTIFIED from all things from which you could not be justified by the law of Moses"
In God's eyes you are no longer guilty of the sins you committed, because in Christ. You have been granted a brand new slate.