Union as Res

For Calvin, union with Christ in his flesh and blood is the res of the sacraments; union or communion with him is the blessing for which they were divinely instituted. Furthermore, this central participatory reality of "incorporation" is bound to a correct understanding of the grace(s) in the object or res to which the sacramental signa refer.

 

Mark Garcia, Life in Christ: Union with Christ and Twofold Grace in Calvin's Theology (Eugene, OR: Wipf and Stock Publishers, 2008), 151