Anon-
I pray for your peace. However you've received mostly useless advice except for the anon who said don't preach if you don't think the Bible's accurate.
What did you plan on preaching? The gospel according to Anon?
You yourself are confused so you'd teach shaky non-faith at best. That's your plan?
A preacher is a man skilled in the word of God who sees everything through the lens of scripture.
You don't fully believe in the scripture. A man of faith does. He's put his whole trust in those words. He's gambled his future on the hope Jesus is who the Bible says and He will do everything He promised He'd do in the Bible including return in the flesh the same way He left 2000yrs ago.
If it's wrong he will be proven a fool a man to be pitied more so than anyone.
Eyes wide open he's gambling with his life the Bible's right. That's the deal for all believers my guess is you aren't there. Yet.
He knows the God that spoke them is the God who's able to preserve them faithfully.
Apologize if my words are harsh but they're actually in your best interest and anyone that might be led astray by your teaching. It would be false teaching and we are warned that anybody that desires to be a teacher is held to a higher standard.
You don't want that unless you're ready for it and you're not you said so yourself.
Preachers aren't embarrassed by God's word either bc they believe it, all of it.
Paul said he wasn't ashamed of the gospel of Christ because in it is the power of life & salvation.
Your problem if I may be so bold is a lack of belief.
I's a good possibility you are not even born again. That alone would preclude you from preaching.
My advice: Read the Bible the gospel of John saved me. Start there. The NKJV is my fav just bc I like the poetic nature it carries more weight to me. Pick one you like it hardly matters why you like it but that you'll want to read it. Then after you've been saved at least three preferably twenty years and when you believe every word cover to cover then go preach.
However bad this may have made you feel ignore your feelings for a while bc they have no part to do with salvation. It has to do with honestly weighing the facts in the Bible and making an informed decision on what you find in there. That's how I can say with high confidence you aren't ready bc you're not actually even a believer you said it yourself. The problm with saying some parts are true but some aren't is who decides you? You see the folly right? You've set yourself up as the highest authority which leaves you nowhere to turn for higher guidance since you've rejected the only guidance we have that's outside of us here on planet earth.
Please believe that this was said from a heart with only your good in mind.