why do exegesis needs to separate the contemporary and classical doctrines...?

Question

what caused them 2 separate 8..?where in fact they co-exist...

Answer 1

I suspect that you mean:

" Why does exegesis need to be separate from the concept of doctrine?"

The answer is that they perform two different functions.

Exegesis looks at the structure of words, phrases, sentences and passages.

Doctrines are an overall presentation of a faith.

This is a completely non faith example.

A woman came into the police station on a Friday night. She said, My hair was pulled, my nose was broken, I have bruses all over my body. My husband doesn't love me anymore.

The police might form a doctine that the woman's husband beat her up.

The exegesis of what the woman said, is that there are two sentences in her statement. They may or may not support each other.

The more that the woman speaks, the more exegesis is done. Soon the doctrine of the police is strengthened or shown to be inacurate. If she says, "When he drinks he gets in a foul mood." That would support the police doctrine. Then she says, "It was dark. The power had been turned off, because he didn't pay the power bill." That might confirm the doctrine. Then she says, Every Friday night he goes to his girlfriend's house on the other side of town." This statement would start to undermine the police doctrine that it was the husband.

Doctrines are formed on what is believed to be strong exegesis. When the exegesis is not strong, it is called a Theory.

Exegesis is "Concrete". Doctrine is using the exegesis of passages to develop what we call a "Faith Statement"

Hope this helps.

Bryan