Both omnipotence and omniscience are contradictory to omnibenevolence 3a. Innocent people endure pointless suffering. It is no defense to say that god's understanding of good is beyond ours, or god becomes an incoherent concept. Omniscience is inconsistent with free will. Any god who creates a sentient being out of dirt, knowing the being will be damned to hell, should have left the dirt alone.
Omnipotence is contradictory to itself.
God is either logically impossible, or an incoherent concept.