“...sola Scriptura, as a doctrine, is a Protestant tradition that denies it is a tradition.”
Speaking as a Baptist, we generally consider sola Scriptura more of a reasonable conclusion, not a tradition. We don’t use it because others did, but because it seems reasonable, and to fit with scripture. Of course, Baptist Doctrine is like Military Intelligence...a bit of a contradiction in terms.
The 1689 Baptist Confession of Faith (http://www.grbc.net/about_us/1689.php)
1.1 The Holy Scriptures are the only sufficient, certain and infallible rule [1] for saving knowledge, faith, and obedience. [2]
Although the light of nature and the works of creation and providence give such clear testimony to the goodness, wisdom and power of God that they leave people without excuse, [3] yet they are not sufficient to give the knowledge of God and his will that is necessary for salvation. [4] Therefore it pleased the Lord to reveal himself at various times and in different ways, and to declare his will to his church. [5] To ensure the preservation and propagation of the truth, and to establish and support the church against human corruption, the malice of Satan, and the world, he committed his complete revelation to writing. The Holy Scriptures are therefore absolutely indispensable, [6] for God’s former ways of revealing his will to his people have now ceased. [7]
1. Or, standard
2. Isaiah 8:20 Luke 16:29 Ephesians 2:20 2 Timothy 3:15-17
3. Psalms 19:1-3 Romans 1:19-21,32 Romans 2:12a,14-15
4. Psalms 19:1-3 with Psalms 19:7-11 Romans 1:19-21 Romans 2:12a,14-15 with Romans 1:16-17 and Romans 3:21
5. Hebrews 1:1-2a
6. Proverbs 22:19-21 Luke 1:1-4 2 Peter 1:12-15 2 Peter 3:1 Deuteronomy 17:18ff Deuteronomy 31:9ff,19ff 1 Corinthians 15:1 2 Thessalonians 2:1-2,15 2 Thessalonians 3:17 Romans 1:8-15 Galatians 4:20 Galatians 6:11 1 Timothy 3:14ff Revelation 1:9,19 Revelation 2:1, etc. Romans 15:4 2 Peter 1:19-21
7. Hebrews 1:1-2a Acts 1:21-22 1 Corinthians 9:1 1 Corinthians 15:7-8 Ephesians 2:20
Does the Bible instruct us to create a doctrine separate from the Word or does the Bible say it is the Word?
People always seem to want to add more as if the Bible is not sufficient.