In Revelation-at the close of probation, one can see the outlay of the Sanctuary. In the outer court was Justification-made righteous by the blood. And in the inner court was Sanctification-a changed life. So in Revelation 22 these are the people who have been Justified/made righteous and Sanctified/become Holy and passed their Judgement Day.
The layout in the Sanctuary is to become Justified (Outer Court), Sanctified (Inner Court)-to be prepared for your Judgement Day (Most Holy Place).
.........and he that is righteous, let him be righteous still: (JUSTIFICATION)
and he that is holy, let him be holy still. (SANCTIFICATION) Revelation 22:11