If god is an omnipotent, onmiscient being, and nothing can happen without his approval (which is inherent, since he knows everything and can do everything), then god is ultimately responsible for people being sent to hell, and for every evil thing that happens on this planet.
These conditions (omnipotence and omniscience) also raise a few other questions:
why would a being that knows ahead of time what would happen ever even put the tree of knowledge of good and evil in the garden in the first place?
Why would a being that knows ahead of time what would happen create people just to have to wipe them out a few centuries later? And why wait until there are only 8 supposedly richeous people left in the entire world?
Knowing that there would be immense suffering that would be caused by the creation of people, why create us on this earth in the first place? god presumably knows what is going to happen to each person before they are made, so why not just make the good souls that are going to go to heaven?
Why set up the system in such a way that it requires this god to take human form in order to act as an ultimate sacrifice to appease himself for all the sins of people? Why not just change the rules?
And my final question:
Did god have a choice in the creation of the universe?