…though the wording may not be the same, the inference is:
[FONT=“Garamond”][size=]14 He called you to this through our gospel
, that you might share in the glory of our Lord Jesus Christ. 15 So then, brothers and sisters, stand firm and hold fast to the teachings we passed on to you, whether by word of mouth or by letter. (2 Thessalonians 2:14-15)
14 But as for you, continue in what you have learned and have become convinced of, because you know those from whom you learned it, 15 and how from infancy you have known the Holy Scriptures, which are able to make you wise for salvation through faith in Christ Jesus. 16 All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, 17 so that the servant of God may be thoroughly equipped for every good work. (2 Timothy 3:14-17)
14 I am writing this not to shame you but to warn you as my dear children. 15 Even if you had ten thousand guardians in Christ, you do not have many fathers, for in Christ Jesus I became your father through the gospel. 16 Therefore I urge you to imitate me. 17 For this reason I have sent to you Timothy, my son whom I love, who is faithful in the Lord. He will remind you of my way of life in Christ Jesus, which agrees with what I teach everywhere in every church. (1 Corinthians 4:14-17)
The emphasis is not in reliance on Sacred Writings alone but on the source of the learning; false/erroneous teaching cannot lead to sound Doctrine–the Faithful must examine their lives according to the Teaching of the Church.