The work of the investigative judgment and blotting out of sins will take place before the second coming of Jesus. In the symbolic service the high priest came out and blessed the congregation. In the same way, when His work as mediator is over, Christ will appear “apart from sin, for salvation” (Hebrews 9:28). LF 200.1
In removing the sins from the sanctuary, the priest confessed them on the head of the scapegoat. Christ will place all these sins on Satan, the instigator of sin. The scapegoat was sent away into “the wilderness” (Leviticus 16:22). Satan, bearing the guilt of sins he has caused God's people to commit, will be confined to the ruined earth for a thousand years and then will suffer the penalty of fire that will destroy the wicked. In this way the plan of redemption will be complete when sin is finally eradicated. LF 200.2