Genesis Chp 28 Verses 1, 7-9

Gen 28:1 And Isaac^H3327 called^{H7121 H413} Jacob,^H3290 and blessed^H1288 him, and charged^H6680 him, and said^H559 unto him, Thou shalt not^H3808 take^H3947 a wife^H802 of the daughters^{H4480 H1323} of Canaan.^H3667

Gen 28:7 And that Jacob^H3290 obeyed^{H8085 H413} his father^H1 and his mother,^H517 and was gone^H1980 to Padanaram;^H6307

Gen 28:8 And Esau^H6215 seeing^H7200 that^H3588 the daughters^H1323 of Canaan^H3667 pleased not^{H7451 H5869} Isaac^H3327 his father;^H1

Gen 28:9 Then went^H1980 Esau^H6215 unto^H413 Ishmael,^H3458 and took^H3947 unto^H5921 the wives^H802 which he had^(H853) Mahalath^H4258 the daughter^H1323 of Ishmael^H3458 Abraham's^H85 son,^H1121 the sister^H269 of Nebajoth,^H5032 to be his wife.^H802

Charged: tsâvâh,tsaw-vaw', A primitive root; (intensively) to constitute, enjoin: - appoint, (for-) bid. (give a) charge, (give a, give in, send with) command (-er, ment), send a messenger, put, (set) in order.

Isaac charged Jacob to not marry any one of the Canaanite woman, and he obeyed, Esau then realized his mistake of marrying a Canaanite woman, went ahead and married Ishmael’s daughter, he thought in this way atleast he would receive some blessings from his father, weird, how in order to correct one mistake we go ahead and make another mistake, without even consulting advise.