

The physical miracle demonstrates his identity and power, but they have a spiritual significance beyond the physical. For example, raising the dead indicated that He is the Creator with power over life and death, but also that He can give spiritual life to people dead in their sins.
This is just silly. It just means the earth is flat there. You need to repeat this everywhere on the earth and then we’ll know the whole earth is flat. Or at least do it in a few different places hundreds of miles apart.