'Us' in the Bible

"I have loved you," says Yahweh. Yet you say, "How have you loved us?" "Wasn't Esau Jacob's brother?" says Yahweh, "Yet I loved Jacob;

"Now, please entreat the favor of God, that he may be gracious to us. With this, will he accept any of you?" says Yahweh of Armies.

Don't we all have one father? Hasn't one God created us? Why do we deal treacherously every man against his brother, profaning the covenant of our fathers?