Which is the most powerful? 

Faith in God...? 

or 

Faith in oneself...? 

If one has faith in God, but not in him, 

will be like 

'good for nothing". 

If one has faith in himself, 
but not in God, 

will be like 

'good for something'. 

If one has faith, 
both in himself and in God, 

then it will be like 

'good for everything'. 

So,

Which is the most powerful?