2 Samuel 11:2, 4

One evening David got up from his bed and walked around on the roof of his palace. While he was on the roof, he saw a woman bathing. She was very beautiful.

So David sent messengers to bring Bathsheba to him. When she came to him, he had sexual relations with her. (Now Bathsheba had purified herself from her monthly period.) Then she went back to her house.