Piscator and the Covenant of Grace
[Piscator] does not show Christ fulfilling the legal covenant so that we might have the covenant of grace established with us. Those who are in the evangelical covenant are said to be freed from rendering perfect obedience to the law, but Piscator does not explain why such obligation becomes void.
Heber de Campos Jr, Doctrine in Development: Johannes Piscator and Debates over Christ’s Active Obedience (Grand Rapids, MI: Reformation Heritage Books, 2017), 154-155