Beersheba was well south of Jerusalem and under the control and protection of godly King Jehoshaphat. Elijah left his servant in Beersheba, safe from Jezebel’s assassins, and went to be alone with the Lord. Great works of the Lord were shown to Ahab and Jezebel and yet seeing and hearing those works did not save either Ahab or Jezebel.
And Ahab told Jezebel all that Elijah had done, also how he had executed all the prophets with the sword. Then Jezebel sent a messenger to Elijah, saying, “So let the gods do to me, and more also, if I do not make your life as the life of one of them by tomorrow about this time.” And when he saw that, he arose and ran for his life, and went to Beersheba, which belongs to Judah, and left his servant there.
I Kings 19:1-3 NKJV
I have always found the story in Acts 23:12 very interesting. Certain Jews were so enraged by Paul’s existence they vowed not to eat or drink anything until they had killed Paul. God by His providence protected Paul and he lived several years afterward. What happened to those who made the vow? Did they break it or die of starvation and thirst?