'Realize' in the Bible

My father might touch me and he'll realize that I'm deceiving him. Then, I'll bring a curse on myself instead of a blessing."

So on the way, he turned aside, approached her, and said, "Come on! Let's have some sex!" But he didn't realize that he was talking to his own daughter-in-law. "What will you give me," she asked, "in order to have sex with me?"