More than a name

What is so miraculous about the name of Jesus?

How did this name we say become so, so life-giving?
Like described in Acts 4:12 for example;

Furthermore, there is no salvation in anyone else, for there is not another name under heaven that has been given among men by which we must get saved.

In a sense are all our names faithful? Depending on who puts faith in us when they say our names? Like family, or friends?

It is a simple name, yes but what makes it miraculous? As it is described in Acts (4:12 and 2:38.)?