I think this song is about someone who is going through a hard time and the lead singer is saying that he can help, the person just has to let go and believe that he can help.
"All the smiles you had to fake. And all the shit you had to take. Just to lead us here again. I never have the things to say. To make it all just go away. To make it all just disappear." He's saying that he never helped before, but then when the chorus comes and he says "Believe in Me, sometimes the weak become the strong," he's saying that he can help now, they just have to believe in him and let him help. That's my interpretation, anyway.

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