2 Timothy 3:15-17 and Jude 1:3.
The sacred writings . . . are able to make you wise for salvation through faith in Christ Jesus. All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be competent, equipped for every good work. . . . Contend for the faith that was once for all delivered to the saints.
As the post with the words of the early Fathers pointed out..if it can not be confirmed in scripture it is a tradition of men and NOT GOD.
Col 2:8 Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
AMEN!
"And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God." -- Luke 4:4
The Scriptures themselves bear witness of Him.