Lyric discussion by marxsux 

Cover art for Savin' Me lyrics by Nickelback

First part means he's questioning his existence(locked inside his head). second part(chorus), he wants God to show him what's important in life and he will do it, but he needs an answer soon or he will kill himself. Then the third part means he has still not gotten an answer of what his purpose is here(say it, tell me the point of our existence) and is going to end his life if he does not find out the truth. You know when something sets u free u feel like you have wings, well his wings are broken and he is not yet free to fly high.

As for the video, i think it's about the battle between predeterminism and free will. are we in control or is something controlling us.