For some I must come first, an unbroken token, Before any vows of the flesh can be spoken

I have a spine, yet I bear no bone, I wear a jacket, though my arms are unshown. You summon my name to secure your flight,Then consume my leaves by a fading light. A judge will hurl me at a thief in retreat, and when you are sprinting, you do me down the street.

I weigh next to nothing, yet I can brighten a room. I cross the distance between stars, then warm your face through a window.

I lay over people struck silent in awe. I am a command to keep secrets in store. I may be a whisper, a good night wish. I'm resounding as loud as the song of a fish.

I am a loyal follower who never takes a step, yet I run in circles all day long. I am driven by stars you see on screen, or by the invisible current hidden in your walls. I can blow you away with my devotion, or slice through the heat without drawing blood. What am I?