He inflicted the wounds that Christ came to heal. He corrupted the human race.
The question now is: Does the Old Testament teach the existence of the Devil?
If the Old Testament teaches anything, it does teach the existence of the Devil, of Satan, of the Serpent, of the enemy of God and man, the deceiver of men and women.
Those who believe the Scriptures are compelled to say that this Devil was created by God, and that God knew when he created him just what he would do—the exact measure of his success; knew that he would be a successful rival; knew that he would deceive and corrupt the children of men; knew that, by reason of this Devil, countless millions of human beings would suffer eternal torment in the prison of pain. And this God also knew when he created the Devil, that he, God, would be compelled to leave his throne, to be bom a babe in Palestine, and to suffer a cruel death. All this he knew when he created the Devil. Why did he create him?
It is no answer to say that this Devil was once an angel of light and fell from his high estate because he was free. God knew what he would do with his freedom when he made him and gave him liberty of action, and as a matter of fact must have made him with the intention that he should rebel; that he should fall; that he should become a devil; that he should tempt and corrupt the father and mother of the human race; that he should make hell a necessity, and that, in consequence of his creation, countless millions of the children of men would suffer eternal pain. Why did he create him?
Admit that God is infinitely wise. Has he ingenuity enough to frame an excuse for the creation of the Devil?
Does the Old Testament teach the existence of a real, living Devil?
The first account of this being is found in Genesis, and in that account he is called the "Serpent." He is declared to have been more subtle than any beast of the field. According to the account, this Serpent had a conversation with Eve, the first woman. We are not told in what language they conversed, or how they understood each other, as this was the first time they had met. Where did Eve get her language? Where did the Serpent get his? Of course, such questions are impudent, but at the same time they are natural.
The result of this conversation was that Eve ate the forbidden fruit and induced Adam to do the same. This is what is called the "Fall," and for this they were expelled from the Garden of Eden.
On account of this, God cursed the earth with weeds and thorns and brambles, cursed man with toil, made woman a slave, and cursed maternity with pain and sorrow.