Display All Post On One Page

Hello everyone, I am here for a big problem. I hope you will help me for this.
I have a website and on this website, i have a blog page. I want to see my all blog post at one page one by one. I write one blog and i keep it under sub heading. but i want that someone click on blog then my all blog come one by one from top to bottom. I don’t want to keep my post under sub heading.
I try my best to make my this post easy to understand all of you that what exactly i want to fix. Please help me. I google it but i found there some plugin which help me to fix this problme. But i don’t want to use any plugin for this. You may suggest me any theme also, which may fix this problem. But I just want to keep my blog post at a same page. My other articles may not be affected.
Thanks in Advance.
Waiting for a positive response soon.

The page I need help with: [log in to see the link]