It is when I am weak

It is when I am weak I am strong in my faith.
It is when I am weak I am keen on my wraith.
It is when I am weak I am not at all proud,
I find strength to speak up, innocently and loud.

Being strong every action by cause and effect
gives itself. And the motive one needs to protect.
It is when I am weak I show faith by my work,
I have faith in my work so that I do not irk.