en_tn_condensed/gen/27/05.md

Now

This verse is background information for the description of the events that follow. The word "now" shows that the author is going to begin to talk about Rebekah and Jacob.

to Esau his son

Esau was the son of both Isaac and Rebekah. The author calls Esau "his son" to emphasize that Isaac preferred Esau over Isaac.