In Genesis 21:10-12, God explicitly chooses Isaac over Ishmael as Abraham's heir through Sarah. This divine selection explains why Abraham later gives everything to Isaac alone.

In Genesis 24:36, Abraham's servant tells Rebekah's family that Abraham gave Isaac everything he owns — the same event Genesis 25:5 records.

Romans 9:7-9 quotes 'through Isaac your offspring shall be reckoned,' explaining that Abraham's true heir was chosen by promise, not flesh alone.

Galatians 4:28 calls believers 'children of promise' like Isaac. Isaac receiving the full inheritance as the promised son is precisely the pattern Paul draws on.

Hebrews 1:2 says Christ is 'appointed heir of all things.' Isaac receiving all from Abraham prefigures this greater divine inheritance.

Deuteronomy 21:17 gives the firstborn a double portion. Abraham gave ALL to Isaac, who was not the firstborn — highlighting God's election over custom.

In John 3:35, the Father has placed all things in the Son's hands — Isaac receiving everything from Abraham typifies the Father-Son inheritance.

In John 17:2, the Father grants the Son authority over all people — paralleling the father-to-son transfer of everything seen here.

Galatians 3:29 says believers are Abraham's heirs through Christ. Isaac receiving 'all' foreshadows this inheritance now extended to all who belong to Christ.

In Matthew 11:27, the Father has committed all things to the Son — Isaac receiving all from Abraham foreshadows Christ receiving all from the Father.

In Matthew 28:18, the risen Christ declares all authority given to him — Isaac receiving Abraham's estate typologically prefigures this.

Romans 8:17 says believers are co-heirs with Christ — the inheritance pattern Isaac received from Abraham extends to Christ's followers.

Romans 8:32 argues God will graciously give all things — echoing the generosity of a father transferring everything to his chosen heir.