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New Testament

The New Testament states Isaac was "offered up" by his father Abraham, and that Isaac blessed his sons. Paul contrasted Isaac, symbolizing Christian liberty, with the rejected older son Ishmael, symbolizing slavery; Hagar is associated with the Sinai covenant, while Sarah is associated with the covenant of grace, into which her son Isaac enters. The Epistle of James chapter 2, verses 21–24, states that the sacrifice of Isaac shows that justification (in the Johannine sense) requires both faith and works.

In the Epistle to the Hebrews, Abraham's willingness to follow God's command to sacrifice Isaac is used as an example of faith as is Isaac's action in blessing Jacob and Esau with reference to the future promised by God to Abraham. In verse 19, the author views the release of Isaac from sacrifice as analogous to the resurrection of Jesus, the idea of the sacrifice of Isaac being a prefigurement of the sacrifice of Jesus on the cross.