LOL "man made doctrine".. that is rich seeing 95% of Roman "doctrine" is clearly man made..
The scriptures contain all we need to know to be saved.. and to live out the Christian life..
It is funny that when it serves Rome's purposes they appeal to scripture.. and then deny its authority when it does not serve its purposes
Do you know what Sola scriptura means ?
The Catholic Church NEVER denies the authority of Scripture, as you charge. It teaches nothing that contradicts what is taught in Scripture.
What the Catholic Church denies is the man-made, unscriptural theory of “sola scriptura.”
It is not found anywhere in Scripture, and was invented by schismatics in the 15th-16th centuries.