Sacramental Presumption

When I baptise, is it as if I had the Holy Ghost up my sleeve to produce at any time? or the body and blood of the Lord to offer to whom I please? It would be sheer presumption to seek to attribute to mortal creatures what belongs to Jesus Christ.

 

Calvin, Sermon on Acts 1:4-5 Ronald Wallace HT Calvin's Doctrine of Word and Sacrament, p. 172.