Job 2:9-10. "Then said his wife unto him, Dost thou still retain thine integrity ? Curse God, and die. But he said unto her, Thou speakest as one of the foolish women speaketh. What ? Shall we receive good at the hand of God, and shall we not receive evil ? In all this did not Job sin with his lips".
Proverbs 16:4. "The LORD hath made all things for himself: yea, even the wicked for the day of evil".
Isaiah 45:7. "I form the light, and create darkness: I make peace, and create evil: I the LORD do all these things".
Amos 3:6. "Shall a trumpet be blown in the city, and the people not be afraid ? shall there be evil in a city, and the LORD hath not done it" ?
As anyone who reads the above passages from the Bible, especially Isaiah 45:7, can plainly see, God himself is the ultimate author, source, and creator of evil. None of the above passages mention anything about Satan, demons, or the sin of Adam and Eve. They simply and clearly state for anyone who can read, and who has reading comprehension, that it is God who creates evil. Anyone who cannot see this clearly and explicitly stated dogma is either totally lacking in reading comprehension, or else is devoid of even the simplest understanding of the concept of right and wrong, morality and immorality, or good and evil.
In light of the above passages, the question that arises is, are things that God command good only because God commands them, or does God command them because they are good ?
If it is the first: Things are good only because God commands them, then any and every thing that God commanded would, by definition, be good. So, if God commanded men to make sex slaves of underage virgin girls, it would, by definition, be good and right to do so. Many Bible believers will immediately object that because God is good he would never issue such an immoral command. Then how does one explain Numbers 31: 17-18, where God, through Moses, commands the men of Israel to make sex slaves of captured young female Midianite virgins ?
"Now therefore kill every male among the little ones, and kill every woman that hath known man by lying with him. But all the women children, that have not known a man by lying with him, keep alive for yourselves".
Before anyone tries to claim that this is not referring to the taking of young female sex slaves, remember, all the male children of the captured Midianites, regardless of how young, and every Midianite woman who was not a virgin, were to be savagely slaughtered. Only the young female virgins were to be spared. The purpose is self-evident. This is the very same God who is worshiped also in the New Testament, of whom it is said that he never changes, but is always the same ("I am the LORD, I change not"..."with whom there is no variableness or shadow of turning").
But if it is the second: God commands things because they are good, this would mean that a standard of goodness exists apart from God, to which God assents. In that case we would not need God to know what is good and what is not, what is moral and what is not.
Bible believers, however, are notorious for cherry-picking. They ignore all the parts of the Bible they don't like and build their faith only around the portions they do like. In fact, most Bible believers do not know everything, or even most things, the Bible they love actually teaches. This is due to their cherry-picking.
So based on the above passages:
Who are you to thank if all of your children die of starvation ?
Who are you to thank if your beloved mother or father die a painful and horrible death because of disease ?
Who are you to thank if you and your family fall victim to home invaders, and you are forced, tied and bound, to watch as your precious and only 6 year old daughter is raped and then murdered ?
Who are you to thank if any evil whatsoever befalls you ?
God, the creator of evil (Isaiah 45:7).
But, there is no God to either thank or curse. We have only ourselves, and the uncaring, mindless, laws of nature to thank for all the evils that befall us. No Satan, no demons, no original sin. Only ourselves, or the unthinking, impersonal, laws of nature.