When that which is perfect ...

... do not remain in the "Valley of tears";
... the Lamb will return;
... There will be no more injustice, sin, death, suffering, bad memories, unknowns, environmental pollution, unemployment.

It is true that what we know about the future are just signs of what will come. But they are reliable signs, because "no eye has seen, no ear has heard, no mind imagined what God has prepared for those who love him"