And the things that thou hast heard of me among many witnesses, the same commit thou to faithful men, who shall be able to teach others also.
---II Timothy 2:2
Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.
---II Timothy 4:2
When a new church is planted there are found both those newly converted and those yet to be converted. Thus both preaching and teaching are necessary. Ordinarily the church is the assembly of the already-converted. But it is different in newly-formed churches under the care of an evangelist.
We call evangelists "missionaries," today, with the consequence that there is confusion in that, for example, Billy Graham is thought of as an evangelist. But strictly speaking he is a gospel preacher, or simply a preacher, charged with spreading the gospel of the good news of salvation in Jesus Christ. By contrast, those called "missionaries" today do the full work of an evangelist, which is preaching and teaching. The reader will note that the Lord's great commission consists in both preaching the gospel, and then subsequent to a new believer's conversion, teaching him or her the "all things commanded." Also note that "discipling" as it is called today involves teaching the all things commanded, whereas in the gospel account "making disciples" means making new converts, with the instruction to follow. The Biblical definition for "making disciples" squares with the truth that all the Lord's believers are His disciples, quite irrespective of the quantity or quality of instruction in the Word they have received.
Thomas Hughes Milner, in his chapter on evangelists wrote,
The evangelist is a tutor–a teacher of teachers. The "sound words of the faith in Jesus..." he is to..."commit to faithful men, who shall be able to teach others also."
Thus in II Timothy 2:2 we have, not a basis for "church schools" or seminaries or divinity schools, but simply the straightforward admonition of Paul to Timothy that the latter should, in process of planting new churches, commit the teaching that Timothy himself had previously heard in the churches of God ("among many witnesses") to "those who shall be able to teach others also." This, then, is the inspired directive for the replication and multiplication of the churches of God.
You will notice, it is not "special knowledge" that qualifies "those who shall be able to teach others also," but, rather, "the things that thou hast heard of me among many witnesses." Now whom could these witnesses be if not a church? And what were "the things that thou hast heard of me" if not 1) the sound words of Scripture, or 2) the plain and unvarnished teaching of Scripture?
We sometimes wonder how the apostles taught in the churches. But what we know is: their epistles ARE teaching in their own right. Perhaps this is the way the apostles taught! We know for a fact that Paul instructed churches to read epistles in the churches. We know also that the church leaders were to be honored for "(speaking) unto you the word of God," Heb. 13:7.
I conclude that evangelists are to do the work that has been appropriated by seminaries, that evangelists are charged with both preaching and teaching the Word, that "missionaries" are those doing the work of an evangelist today, that those called "evangelists" today are in actuality preachers, that preaching is to the world and not the church and thus there is no need for a "preacher" in any church other than a new one being planted, and that subsequent to an evangelist declaring the whole counsel of God, elders are appointed by the evangelist (Titus 1:5) and the evangelist's church-planting work in that locale is finished.
If there were a passage in the New Testament indicating a need for seminaries, it would likely be II Timothy 2:2. However we have endeavored to show that the passage simply applies to evangelists. Timothy was an evangelist. Timothy was the recipient of Paul's directive. The failure of the churches to adhere to the sound words of Scripture has led to a redefinition of "evangelist," and we are to understand that the consequences are not matters of indifference.