Question: Doesn’t 2 Timothy 3:16–17 contradict the principle “Scripture alone”? This passage says that Scripture is useful (and not: sufficient or the only source). A compass is useful for navigation, but it is not the only tool. Moreover, Paul tells Timothy to hold fast to what he learned from other people (v. 14)! That emphasizes tradition (oral transmission) as a necessary foundation. In addition, at the time it was written, the New Testament did not yet exist as a book. “Scripture” here therefore means the Old Testament. The principle “Scripture alone” would therefore exclude the New Testament here. And one more thing: The Bible itself does not say which books belong to it. Only the church established the canon. So the authority of the church is presupposed in order for something to be recognized as “God-breathed” in the first place. Scripture works only in conjunction with tradition and the teaching office, that is, an authority outside itself.

Answer: This is a classic argument that is often brought forward from a Catholic or Orthodox perspective against the principle of Sola Scriptura (“Scripture alone”). This phrase coined by Luther expresses the—and indeed true—principle of the Reformation that truth is conveyed through the Bible and cannot and must not be expanded or changed by additions such as church tradition.

The passage from 2 Timothy 3 does not contradict the principle of Sola Scriptura at all. Quite the contrary: it undergirds it. The Word of God has authority over the church (assembly), not the other way around.

On the points raised in detail:

1. Only useful (v. 16) or also perfectly sufficient (v. 17)?

You must not read verse 16 without verse 17. Paul writes that the goal of Scripture is that “the man of God may be complete, equipped for every good work.” If Scripture makes someone “complete” and “equipped,” nothing is lacking. A tool that achieves a goal completely by definition is sufficient.

2. On verse 14 (tradition vs. apostolic teaching)

Paul points Timothy to what he has learned—but from whom? First and foremost from Paul himself, that is, from an apostle: “… knowing from whom you have learned them …” (2 Timothy 3:14). This is also underscored by verse 10: “Now you followed my teaching.” Likewise in chapter 2: “… The things which you have heard from me in the presence of many witnesses …” (v. 2).

Timothy had, of course, also learned from others. The word “whom” is plural, so it can also be translated: “knowing from which [persons] you have learned.” But here too it was not about personal opinions, but about the authority of the inspired Word. Therefore Paul continues: “and that from childhood you have known the sacred writings …” (2 Timothy 3:15). The passing on of the Word of God thus took place through various channels: through the apostle Paul as well as through other apostles or prophets. They all spoke and wrote under inspiration and bore witness to the Word of God. The same is true of the writers of the Old Testament. In every case, the authority lay in the Word of God. No one has authority over the Word of God.

The Reformers never denied that truth was proclaimed orally. But: after the apostles died, the inspired Scripture became the only testable norm. Any “tradition” that contradicts the apostles’ written teaching lacks all legitimacy precisely because it contradicts God’s Word. There are many examples of this—just think of the papacy, the idea that a priesthood mediates between “other” believers and God, or the doctrine of regeneration through baptism, not to mention the veneration of saints or even of relics.

3. On the scope of Scripture (Old vs. New Testament)

The apostles knew that their own letters and those of the other apostles had authority and explicitly affirmed this (cf. 2 Peter 3:15–16, where Peter already counts Paul’s letters as “Scripture,” and 1 Timothy 5:18, where Paul recognizes the Gospel of Luke as “Scripture”). The principle of 2 Timothy 3:15–16 is an essential characteristic of God’s Word: as soon as God speaks, that Word is the highest standard. This applies to the 39 books of the OT and it applies just as much to the 27 books of the NT.

4. On the authority of the church and the canon

Scripture is “God-breathed” (not merely “breathed by God”) because God inspired it, not because the church would have conferred this status on it. The church did not “create” the canon. Rather, the apostles recognized the books belonging to the canon as such. The councils at Hippo and Carthage (late 4th century) only confirmed this against attacks “from the right and left,” not, as is often claimed, “authoritatively determined” it.

A jeweler who recognizes a diamond as genuine gives the diamond neither its hardness nor its value—the value lies in the nature of the stone.

“Forever, LORD, Your word stands firm in heaven.”

(Psalm 119:89)