The song's about resilience - about hanging in when times are tough ("heavy stones feel no weather"), and knowing that the tough times will shape you and make you stronger by the end.
"From the rain comes a river running wild..." - the difficult times
"...that will create an empire for you, an empire for two" - you become stronger for having gone through the difficulties
The singer is asking the person he's singing to to find strength and resolve and comfort in their love "I live in comfort in the sound and the shape of the heart", and trust that they'll be stronger for their difficulties ("an empire for two")
The song's about resilience - about hanging in when times are tough ("heavy stones feel no weather"), and knowing that the tough times will shape you and make you stronger by the end.
"From the rain comes a river running wild..." - the difficult times "...that will create an empire for you, an empire for two" - you become stronger for having gone through the difficulties
The singer is asking the person he's singing to to find strength and resolve and comfort in their love "I live in comfort in the sound and the shape of the heart", and trust that they'll be stronger for their difficulties ("an empire for two")