I keep reading on the sacraments that they are "effectual means of grace." Does is simply mean that God is "present" in these acts somehow without actually "becoming" these acts like in transubstantiation? They aren't bare signs, but we seem to to treat them that way, and if they are effectual, are they only effectual when they are, but not when they aren't? In that case, how can they be "effectual?" Are the only "effectual" to the elect? Not sure really what it means to be a "means of grace" other than that it somehow nourishes our faith from a visible point of view. Any help in this area would be much appreciated!