The second blessing of the Amidah is a praise of G-d’s power. Four times, it mentions the concept “techiat hametim,” “Who gives life to the dead.” Each of the four references is to a different kind of “resurrection.”
The first refers to the revitalization of the land because of life giving rain. It comes right before the prayer for rain/dew.
The second is related to the healing power of G-d, who can help us recover even from the most serious illnesses. It is followed immediately by recognizing G-d as the One who supports the fallen.
The third is similar to the idea “out of sight, out of mind.” It’s talking about the experience of seeing someone that you have not seen for a very long time. It is followed by a reference to G-d as the one who causes redemption to happen, when all the lost will be reunited.
And the final reference is to the ultimate “resurrection,” the idea that somehow, in ways we do not comprehend, the dead will be brought back to life. Originally, this referred to an actual corporeal, bodily resurrection. Over the course of time, this obviously difficult concept became rarified, so that it came to refer to the ongoing life of our souls. Obviously, it is a concept shrouded in mystery.
In any case, by looking at these four different categories, we can see how Hashem manifests Himself in every aspect of our lives—the natural order; our own physical, mortal, bodily, existence; the emotional and social realm in which we live our lives; and the metaphysical and mystical world that is beyond our limited human understanding.