@revelette1,
Evangelism means one thing "biblically"...
It means to bring new people into the church.
By hook or by crook.
It does not imply these people are educated much by the evangelist and they may not even stay long in the church. Just long enough to have some sort of experience enough to err ahem cough, leave a donation.
All the evangelist has to do is give them hope and a false illusion of God.
The world may see evangelism as meaning other things, but biblically, it simply means, adding new souls to the church.
An evangelist really does not need to know the Bible very well, they only need a gimmick or charisma that draws people in. The other church members pick up after that event.
Evangelists spout out scriptures in a sort of memorized way but they have often not tried to really put the whole picture together themselves. They often lack real understanding of them. But they know how to use them to draw others in. Due to their gimmick way of using scriptures they are often not internally convinced themselves. This is why many "fall from grace".
That does not mean an evangelist cannot be a teacher.
Though, new believers (often young people) need a sort of lighthearted introduction and are not yet ready for the advanced matters of the church anyway.
They are "beginners"... where, the deeper matters of the church are often reserved for "advanced" members of the church.
Thus the evangelist does not regularly address the more advanced church doctrines to the general audience.
Teachers address those things. Teachers do not always have the same charisma that evangelists have. They are often dry and less illustrious. They rely more on reason rather than gimmicks and they know the deeper more spiritual meanings of the doctrine. They are much more studied and even more genuine. A good spiritual teacher is a rare thing.
I might add that many of the best teachers eventually leave the church because they study the doctrine to the extent that they begin to see through the validity of the religion. (much like Martin Luther and his thesis)
Evangelists will stay for life because they keep using the same "milk" trickery and never delve into the "meat" of the doctrine and they are also addicted to the prosperity that accompanies the vocation. Evangelists will write many books and they will always end with things like "only God knows" or "it is a mystery of God" or "it is God's will" this is a cop out because they do not understand themselves their own fickle God's inner workings..
So even if they were to doubt the doctrine they will stay because of the lucrative benefits of the charade. Teachers are often not paid as much and remain in the church out of duty.
Evangelists would rather have the kingdoms and riches of the world rather than the respect of a God...
This is why they can be damaging to people who truly trust in them only to find out that these evangelists are "fake"...