Christ died for the elect, with them He establishes God’s covenant. A covenant of friendship that already existed in the Godhead between the three persons. God brings us into that covenant, not by merit or by works on our part but graciously in Christ. We picture that in applying the outward sign of baptism laying hold of the promise of God that He will be our God and the God of our spiritual seed after us in the line of continued generations. In the OT by the sign of circumcision which portrayed the bloody sacrifice to come and in the NT by baptism the washing away of our sins. This was organic in the OT with Israel the church of the OT and now is with the church the Israel of the NT. Like the number of the elect the covenant of grace can neither be added to nor diminished therefrom.