If God is the most powerful and can do everything, can he create something more powerful than him? If he can't, how can he be able to do everything?

See, its very simple thing ,the god is MOST POWERFUL power .

Which means he is already the most powerful thing then how can there be anyone with more power as he is already the MOST POWERFUL so there cannot be any further power exists than god because he is already the extreme powerful.

Hope u get it.