Genesis 16:4

16:4 He had sexual relations with Hagar, and she became pregnant. Once Hagar realized she was pregnant, she despised Sarai.

Genesis 29:23

29:23 In the evening he brought his daughter Leah to Jacob, and Jacob had marital relations with her.

Genesis 30:4

30:4 So Rachel gave him her servant Bilhah as a wife, and Jacob had marital relations with her.