The mission of the Savior is to liberate God and punish Satan.
Quotes about the need for a messiah
From the speeches of Sun Myung Moon and Hak Ja Han
The Savior does not just save people but also liberates God.
Since humankind has received satanic blood, people cannot return to God on their own. So the Messiah must accomplish absolute restoration of the lineage, renewing the blood line that was defiled by Satan.
The Messiah is the one who came as the ancestor of mankind centered on love.