Jacob blessed his sons and two of his grandsons making clear to them GOD’s Excellent Promise that brings about The RULER of Judah and the place of each in the Nation of Israel
Esau did not value the birthright which in his case also included GOD’s Promise. Though he sought a blessing with bitter tears, it was too late. Hebrews 12 explains this scene from GOD’s perspective.
Abram is blessed by Melchizedek, Priest of GOD MOST HIGH, after GOD’s Deliverance of Abram’s enemies into his hand, allowing the return of Lot and his family to Sodom.