Genesis 25:26
The second one was born holding on tightly to the heel of Esau. He was named Jacob. Isaac was sixty years old when they were born.
Genesis 27:36
Esau said: This is the second time that he has cheated me. No wonder his name is Jacob. He took my rights as the firstborn son. Now he has taken my blessing. Have you saved a blessing for me?
Hosea 12:3
Their ancestor Jacob held on to his brother's heel while the two of them were in their mother's womb. When Jacob became a man, he struggled with God.
Genesis 38:28-30
As she was giving birth, one of them put out his hand. The midwife took a scarlet thread and tied it on his wrist and said: This one came out first.