27:18-29 Jacob, with some difficulty, gained his point, and got the blessing. This blessing is in very general terms. No mention is made of the distinguishing mercies in the covenant with Abraham. This might be owing to Isaac having Esau in his mind, though it was Jacob who was before him. He could not be ignorant how Esau had despised the best things. Moreover, his attachment to Esau, so as to disregard the mind of God, must have greatly weakened his own faith in these things. It might therefore be expected, that leanness would attend his blessing, agreeing with the state of his mind.
29. Let people serve thee—fulfilled in the discomfiture of the hostile tribes that opposed the Israelites in the wilderness; and in the pre-eminence and power they attained after their national establishment in the promised land. This blessing was not realized to Jacob, but to his descendants; and the temporal blessings promised were but a shadow of those spiritual ones, which formed the grand distinction of Jacob's posterity.