John Calvin Commentary Genesis 27:26

"And his father Isaac said unto him, Come near now, and kiss me, my son." — Genesis 27:26 (ASV)

Come near now, and kiss me. We know that the practice of kissing was then in use, which many nations retain to this day. Profane men, however, may say that it is ludicrous for an old man, whose mind was already obtuse and who, moreover, had eaten and drunk heartily, to pour forth his benedictions upon a person who was only acting a part. But since Moses has previously recorded the oracle of God, by which the adoption was destined for the younger son, we ought to reverently contemplate the secret providence of God, which profane men disregard.

Truly, Isaac was not so in bondage to the attractions of meat and drink that he was unable, with sobriety of mind, to reflect upon the divine command given to him, and to undertake seriously, and with a certain faith in his own vocation, the very work in which, because of the weakness of his flesh, he wavered and faltered.

Therefore, we must not judge this blessing by its external appearance, but by the celestial decree; just as it eventually became clear from the outcome that God was not trifling, nor did man act rashly in this matter; and truly, if the same faith dwells in us that flourished in the patriarch’s heart, nothing will prevent the divine power from shining forth all the more clearly in human weakness.