And tarry with him a few days, until thy brother's fury turn away;Rebekah was hoping that Jacob would have to disappear for only a short time. However, the few days turned into twenty years (Genesis 31:41) and there's no reference in the Bible that she and her beloved son ever met again.
And by thy sword shalt thou live, and shalt serve thy brother; and it shall come to pass when thou shalt have the dominion, that thou shalt break his yoke from off thy neck.Esau had the dominion when Esau and Jacob met for their first time after Jacob fled to Padanaram (Genesis 33:3). In process of time, the Edomites (the descendants of Esau, Genesis 36:1) served the Tribe of Judah but gained their freedom during the time of King Joram (2 Kings 8:20).
And Isaac answered and said unto Esau, Behold, I have made him thy lord, and all his brethren have I given to him for servants; and with corn and wine have I sustained him: and what shall I do now unto thee, my son?Isaac initiated the blessing but it's God that fulfills the blessing (The source of all true blessings). Apparently, once the blessing is in God's hands, the blessing is irrevocable. Therefore, there was nothing Isaac could do to change what God had already ordained for Jacob (Genesis 27:28).
And he said, Is not he rightly named Jacob? for he hath supplanted me these two times: he took away my birthright; and, behold, now he hath taken away my blessing. And he said, Hast thou not reserved a blessing for me?Esau has no one to blame but himself for the decision he made in the past (Genesis 25:33). Joseph (meaning to take the place of another) was rightly named because the LORD told Rebekah that the elder shall serve the younger (Genesis 25:23). I don't believe that this was preordained; instead, I believe that God told Rebekah this because God knew that Esau would give away his birthright.
And Isaac trembled very exceedingly, and said, Who? where is he that hath taken venison, and brought it me, and I have eaten of all before thou camest, and have blessed him? yea, and he shall be blessed.After blessing Jacob, Isaac states yea, and he shall be blessed because all true blessings come only from God. Isaac acknowledges the source of all true blessings in Genesis 28:3.
And he also had made savoury meat, and brought it unto his father, and said unto his father, Let my father arise, and eat of his son's venison, that thy soul may bless me.By following his father's instructions (Genesis 27:4), Esau was hoping to regain his birthright as the first-born (Genesis 25:34).