Isaiah 60:5 Then thou shalt see, and flow together, and thine heart shall fear, and be enlarged; because the abundance of the sea shall be converted unto thee, the forces of the Gentiles shall come unto thee.
The 'abundance of the sea' probably refers to the mineral value of the Dead Sea, which is staggering.
As I recall, the wealth within the Dead Sea has been calculated to be several TRILLION$ worth.