Genesis 27:27-40 is the account of Isaac blessing Jacob and Esau, which Hebrews 11:20 summarizes as an act of faith concerning future things.

Genesis 28:3 records Isaac's blessing of Jacob for fruitfulness and inheritance, which is part of the 'things to come' referenced in Hebrews 11:20.

Genesis 27:23 describes Isaac blessing Jacob despite not recognizing him, which is the event Hebrews 11:20 attributes to faith.

Genesis 27:28 contains Isaac's blessing of Jacob with dew and fatness, which Hebrews 11:20 refers to as blessings concerning future things.

Genesis 27:39 records Isaac's blessing of Esau, which Hebrews 11:20 includes as part of Isaac's faith concerning the future.