Because we love YAHWEH and live for HIM, HE will warn and deter anyone who comes after us to hurt us or take our possessions or desire to take our wives or children. Our FATHER will warn others in order to protect us.
Genesis 31:22-24 And it was told Laban on the third day that Jacob was fled. And he took his brethren with him, and pursued after him seven days’ journey; and they overtook him in the mount Gilead. And God came to Laban the Syrian in a dream by night, and said unto him, Take heed that thou speak not to Jacob either good or bad. https://bible.com/bible/1/gen.31.22.KJV
Genesis 20:1-8 From there Abraham journeyed toward the territory of the Negeb and lived between Kadesh and Shur; and he sojourned in Gerar. And Abraham said of Sarah his wife, “She is my sister.” And Abimelech king of Gerar sent and took Sarah. But God came to Abimelech in a dream by night and said to him, “Behold, you are a dead man because of the woman whom you have taken, for she is a man’s wife.” Now Abimelech had not approached her. So he said, “Lord, will you kill an innocent people? Did he not himself say to me, ‘She is my sister’? And she herself said, ‘He is my brother.’ In the integrity of my heart and the innocence of my hands I have done this.” Then God said to him in the dream, “Yes, I know that you have done this in the integrity of your heart, and it was I who kept you from sinning against me. Therefore I did not let you touch her. Now then, return the man’s wife, for he is a prophet, so that he will pray for you, and you shall live. But if you do not return her, know that you shall surely die, you and all who are yours.” So Abimelech rose early in the morning and called all his servants and told them all these things. And the men were very much afraid. https://bible.com/bible/59/gen.20.1.ESV
Matthew 2:11-13 And when they were come into the house, they saw the young child with Mary his mother, and fell down, and worshipped him: and when they had opened their treasures, they presented unto him gifts; gold, and frankincense, and myrrh. And being warned of God in a dream that they should not return to Herod, they departed into their own country another way. And when they were departed, behold, the angel of the Lord appeareth to Joseph in a dream, saying, Arise, and take the young child and his mother, and flee into Egypt, and be thou there until I bring thee word: for Herod will seek the young child to destroy him. https://bible.com/bible/1/mat.2.11.KJV