God has His hands tied if people don't want Him to help, if people don't seek Him and pray, pray themselves or others pray for them.
God is all powerful but only with a combination of our will.
If all people sought God and His deliverance, the bad things would stop now.
There are some rules of the universe that we don't understand, God, even though all merciful and good, cannot work in this world without our cooperation.
And yes, sometimes He can allow someone to die despite the prayers because He knows more than us, He knows it is for the better, don't forget death is not the absolute catastrophe for God and believers.
Yes, atheists can have good moral compass, but I wish they were honest and come clean, the majority of their moral compass comes from being born to a culture influenced by centuries of christian thought. If it wasn't for this, their compass would be telling them to go to the arena were Simon Cowell organized a fantastic spectacle of bloody gladiator fights and people eaten by lions and to make a great day out of it.
Their compass would be telling them to throw their disabled children off cliffs and push their elderly parents off as well to put them out of their misery .
Hang on a minute......Oh yes, sadly we are now living in mainly post christian culture.