After you attain 'my stamp of approval' for liberation, the only thing that remains is the darshan of the Tirthankar Lord. Doing His darshan means liberation! Darshan of tirthankar Lord, vitraag Lord, in the final stage will give liberation. The Gnani gets everything ready, and the Tirthankar Lord puts the final touches. He puts the decoration on the top. The Lord puts the icing on the cake.
Therefore, this Lord Simandhar Swami will bring salvation for the entire world. He is the instrument for the salvation of the world because He is currently living!