Genesis 21:1 – 21, Galatians 4:21 – 31
Genesis 21:1–4 (NKJV)
1 And the Lord visited Sarah as He had said, and the Lord did for Sarah as He had spoken. 2 For Sarah conceived and bore Abraham a son in his old age, at the set time of which God had spoken to him. 3 And Abraham called the name of his son who was born to him—whom Sarah bore to him—Isaac. 4 Then Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.
I Happy day of celebration
II Unhappy day of separation
Genesis 21:9 (NKJV)
9 And Sarah saw the son of Hagar the Egyptian, whom she had borne to Abraham, scoffing.
III Vital lessons about salvation