Abraham listened to Ephron. Abraham weighed to Ephron the silver which he had named in the audience of the children of Heth, four hundred shekels of silver,A shekel is about 10 grams, so 400 shekels would be about 4 kg. or 8.8 pounds. according to the current merchants’ standard.
Genesis 3:17
To Adam he said, “Because you have listened to your wife’s voice, and ate from the tree, about which I commanded you, saying, ‘You shall not eat of it,’ the ground is cursed for your sake. You will eat from it with much labor all the days of your life.
Genesis 16:2
Sarai said to Abram, “See now, Yahweh has restrained me from bearing. Please go in to my servant. It may be that I will obtain children by her.” Abram listened to the voice of Sarai.
Genesis 17:5
Your name will no more be called Abram, but your name will be Abraham; for I have made you the father of a multitude of nations.
Genesis 17:9
God said to Abraham, “As for you, you will keep my covenant, you and your offspringor, seed after you throughout their generations.
Genesis 17:15
God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but her name will be Sarah.