AND WITCHES, TOO

The Old Testament is not only chock-full of logical contradictions and extreme violence, it's also full of superstitions, including a belief in witchcraft:

1 Samuel 28 (New International Version)
Saul and the Witch of Endor

3 Now Samuel was dead, and all Israel had mourned for him and buried him in his own town of Ramah. Saul had expelled the mediums and spiritists from the land.

5 When Saul saw the Philistine army, he was afraid; terror filled his heart. 6 He inquired of the LORD, but the LORD did not answer him by dreams or Urim or prophets. 7 Saul then said to his attendants, "Find me a woman who is a medium, so I may go and inquire of her." "There is one in Endor," they said. 8 So Saul disguised himself, putting on other clothes, and at night he and two men went to the woman. "Consult a spirit for me," he said, "and bring up for me the one I name." 9 But the woman said to him, "Surely you know what Saul has done. He has cut off the mediums and spiritists from the land. Why have you set a trap for my life to bring about my death?" 10 Saul swore to her by the LORD, "As surely as the LORD lives, you will not be punished for this." 11 Then the woman asked, "Whom shall I bring up for you?" "Bring up Samuel," he said. 12 When the woman saw Samuel, she cried out at the top of her voice and said to Saul, "Why have you deceived me? You are Saul!" 13 The king said to her, "Don't be afraid. What do you see?" The woman said, "I see a spirit coming up out of the ground." 14 "What does he look like?" he asked. "An old man wearing a robe is coming up," she said. Then Saul knew it was Samuel, and he bowed down and prostrated himself with his face to the ground. 15 Samuel said to Saul, "Why have you disturbed me by bringing me up?" "I am in great distress," Saul said. "The Philistines are fighting against me, and God has turned away from me. He no longer answers me, either by prophets or by dreams. So I have called on you to tell me what to do."

Magicians (males) were also believed to be effective:

Exodus 7 (New International Version)
Aaron's Staff Becomes a Snake

8 The LORD said to Moses and Aaron, 9 "When Pharaoh says to you, 'Perform a miracle,' then say to Aaron, 'Take your staff and throw it down before Pharaoh,' and it will become a snake." 10 So Moses and Aaron went to Pharaoh and did just as the LORD commanded. Aaron threw his staff down in front of Pharaoh and his officials, and it became a snake. 11 Pharaoh then summoned wise men and sorcerers, and the Egyptian magicians also did the same things by their secret arts: 12 Each one threw down his staff and it became a snake.