[ealgeone]

The constant teaching of the Church. Now that was not hard.

What is the "constant teaching of the church" based upon? Hope that's not too hard.

There has to be a canon of truth against which the teachings are based.

What is it?

[Petrosius]

What is the "constant teaching of the church" based upon? Hope that's not too hard.

There has to be a canon of truth against which the teachings are based.

What is it?

Such easy questions. The constant teaching of the Church is based upon the revelation of Jesus Christ as handed down to the Apostles and preserved both in Sacred Scripture and also in Sacred Tradition. This is in contrast to the novelties of the so-called Reformers who crafted teachings that were unknown to Christianity for 1500 years.