Q. 587. What do we mean by the "matter and form" of the Sacraments? A. By the "matter" of the Sacraments we mean the visible things, such as water, oil, bread, wine, etc., used for the Sacraments.

Should it be so hard to believe that he would redeem us through the instrumentality of matter? Because that is what he has done, wants to do and does at the Easter Vigil through the sacraments.