The promise of the New Covenant was specifically with “the house of Israel and with the house of Judah” (Jer 31:31). However, the Christian benefits from some aspects of the New Covenant, namely the forgiveness of sins and the indwelling of the Holy Spirit. The Christian is able to benefit from aspects of the New Covenant that are in effect right now because of his union with the Lord Jesus Christ who inaugurated the covenant with His shed blood on the cross.