There are other ways to translate the verse:
[ASV] looking for the blessed hope and appearing of the glory of the great God and our Saviour Jesus Christ;
[BRG] Looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ;
[GNV] Looking for that blessed hope, and appearing of that glory of that mighty God, and of our Savior Jesus Christ.
[KJV] Looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ;
[AKJV] looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ;
[TLB] looking forward to that wonderful time we’ve been expecting, when his glory shall be seen—the glory of our great God and Savior, Jesus Christ.
[REV] while we wait for the blessed hope and appearing of our great God and Savior’s glory—Jesus Christ,