Such being the view of religiously disposed persons outside of the Catholic Church regarding the New Testament teaching of Christ, it would seem easy at first sight to convince them of the Catholic doctrine by reference to the words of Christ and the Gospels, which contain explicit, if not complete testimony in behalf of the Catholic teaching. There is one difficulty in the way of this, and that is that Protestants themselves distrust the meaning of the New Testament words except in so far as it expresses their own feelings. The principle of private interpretation necessarily leads to this one-sided view. A hundred persons appeal to the one Book as an infallible expression of God's will and truth. Now, some of these infallible expressions manifestly contradict one another as Protestants interpret them. Yet the consequences of such contradictions are vital, and involve eternal life or death. Take the doctrine of baptism by water as essential to salvation, according to the reading of some Protestants; yet the Quaker, no less sincere than his Baptist neighbor, and claiming a special inward light, consciously neglects baptism, holding that the teaching of the New Testament is only meant in a spiritual sense. Equally awful in their consequences are the two contrary doctrines regarding the Eucharistic presence of Christ as declared in the New Testament, one believer drawing the conclusion that he must adore God under the veil of bread, the other equally convinced from the same Scriptures that such a view is sheer idolatry, and that there is nothing divine under the appearance of bread. This appeal to private judgment makes most Protestants sceptical if you attempt to prove to them Catholic doctrine from the New Testament; and unless you can first convince them that the Church has a greater claim to declare the sense of the Bible than any private individual, they will consider their opinion of its meaning and purpose just as good as yours. But it is different if you appeal to the Old Testament for a confirmation of Catholic doctrine. And I would strongly urge this method for various reasons. Every Protestant will admit that the Old Testament is not only inspired and divine in its origin, but that in its historic expression, even the deutero-canonical portion, contains the application of its meaning and purpose. In other words, that God not merely gave the Israelites a law, but also shows us how He meant them to interpret that law in their lives--domestic, social, and religious. Here, therefore, we have little need, or even opportunity, for private interpretation as to God's meaning. That meaning becomes clear from the action of His people.