I was taught no valid doctrines after that point can ever exist. They are only to be taken as commentaries, suggestions or opinions and are not the word of God but of people. There are no other valid Bible texts. Let's just talk about it like adults.
Regarding "doctrine(s)"
FROM THE BIBLE DICTIONARY
(excerpt)
Doctrine
(Gk.
didaskalia [
didaskaliva]). Act of teaching or that which is taught. The use of the term in Scripture, however, is broader than a simple reference to information passed on from one person to another or from one generation to the next. Christianity is a religion founded on a message of good news rooted in the significance of the life of Jesus Christ. In Scripture, then, doctrine refers to the entire body of essential theological truths that define and describe that message (
1 Tim 1:10 ;
4:16 ;
6:3 ;
Titus 1:9 ). The message includes historical facts, such as those regarding the events of the life of Jesus Christ (
1 Cor 11:23 ). But it is deeper than biographical facts alone. As J. Gresham Machen pointed out years ago, Jesus' death is an integral historical fact but it is not doctrine. Jesus' death for sins (
1 Cor 15:3 ) is doctrine. Doctrine, then, is scriptural teaching on theological truths.
(found here)
Doctrine Definition and Meaning - Bible Dictionary
............and an interesting excerpt states:
Christianity is a way of life founded on doctrine. Some disparage doctrine in favor of the spiritual life. Paul, however, taught that spiritual growth in Christ is dependent on faithfulness to sound doctrine, for its truth provides the means of growth (
Col 2:6 ). The apostle John developed three tests for discerning authentic spirituality: believing right doctrine (
1 Jo 2:18-27 ), obedience to right doctrine (2:28-3:10), and giving expression to right doctrine with love (2:7-11). Faithful obedience and love, then, are not alternatives to sound doctrine. They are the fruit of right doctrine as it works itself out in the believer's character and relationships.
So, I'm not sure how this applies to your statement.........but it is worthy of consideration