Genesis 29:19

Laban said ‘her’. He did not say ‘Rachel’. Perhaps he had already decided that he would give Leah to Jacob instead of Rachel. (See verse 23.)

Jacob marries

v21 After 7 years, Jacob spoke to Laban. He said, ‘Give me my wife so that I may have sex with her. I have served you for the time that I promised.’ v22 So Laban prepared a big meal. He gathered together to the meal all the men who lived in the place.

v23 But in the evening Laban took his daughter Leah and he brought her to Jacob. So Jacob had sex with her. v24 And Laban gave his maid Zilpah to his daughter Leah to be her maid. v25 When it was morning, Jacob saw that his wife was Leah. And Jacob said to Laban, ‘You should not have done this to me. I served you in order to earn Rachel. And now you have cheated me.’