The New John Gill Exposition of the Entire BibleGenesis 25:28
And Isaac loved Esau, because he did eat of [his] venison,
&c.] Better than Jacob, not only because he was his firstborn, but
because he brought him of the flesh of creatures, which he took in
hunting, and being dressed, were savoury food to him: it is in the
original, "because venison (or what he hunted) [was] in his mouth" F8,
into which he put it, and was very grateful to his taste:
but Rebekah loved Jacob;
more than Esau, being more at home with her,
and of a milder disposition; and more especially being a good man, a
partaker of the grace of God, and to whom she knew by the oracle the
blessing and promise belonged.
F8 (wypb dyu yk) "quia venatio in ore ejus", Pagninus, Montanus.