Sarah
Sarah, type of grace, "the freewoman," and of the "Jerusalem which is above." See (Genesis 17:15-19); (Galatians 4:22-31).
2 Isaac is typical in fourfold way:
(1) of the Church as composed of the spiritual children of Abraham (Galatians 4:28).
(2) of Christ as the Son "obedient unto death" (Genesis 22:1-10); (Philippians 2:5-8).
(3) of Christ as the Bridegroom of a called-out bride see Gen 24; also, "Church," (Matthew 16:18);
( See Scofield) - (Matthew 16:18).
(4) of the new nature of the believer as "born after the Spirit" (Galatians 4:29).