Genesis 28:6

6 And Esau saw that Isaac blessed Jacob, and sent him away to Mesopotamia of Syria as he blessed him, to take to himself a wife thence, and he charged him, saying, Thou shalt not take a wife of the daughters of the Chananites;

Genesis 28:6 Meaning and Commentary

Genesis 28:6

And when Esau saw that Isaac had blessed Jacob
Had conferred the blessing before given, or had wished him a good journey; which perhaps may be all that Esau understood by it, and so was not so much offended with it: and sent him away to Padanaram, to take him a wife from thence;
which likewise might not be displeasing to him, partly as he understood it to be only on account of taking a wife, and not on account of his ill design upon him, which he might imagine his parents knew nothing of; and partly as he would now be out of the way, and he might find means the easier to ingratiate himself into his father's favour, and get him to revoke the blessing, and settle the inheritance upon him: and that as he blessed him, he gave him a charge, saying, thou shalt
not take a wife of the daughters of Canaan;
or of the Canaanites, of any of the tribes or nations that belonged to that people, whether Hittites or others.

Genesis 28:6 In-Context

4 And may he give thee the blessing of my father Abraam, even to thee and to thy seed after thee, to inherit the land of thy sojourning, which God gave to Abraam.
5 So Isaac sent away Jacob, and he went into Mesopotamia to Laban the son of Bethuel the Syrian, the brother of Rebecca the mother of Jacob and Esau.
6 And Esau saw that Isaac blessed Jacob, and sent him away to Mesopotamia of Syria as he blessed him, to take to himself a wife thence, and he charged him, saying, Thou shalt not take a wife of the daughters of the Chananites;
7 and Jacob hearkened to his father and his mother, and went to Mesopotamia of Syria.
8 And Esau also having seen that the daughters of Chanaan were evil before his father Isaac,

The Brenton translation of the Septuagint is in the public domain.