Pick and read any prose chapter of the Bible. Poetry is obviously a completely different situation. Then, read a chapter of any novel written in the last 200 years. There's an enormous difference in the way they are written. The Bible, written by people who were largely unfamiliar with the written word, reads like somebody talking in a transcript. There aren't the complex sentence structures and transitions you find in modern written text. It's like pre-Renaissance artwork before they discovered perspective. The Bible, and all ancient texts could use some conjunctions and subordinte clauses. This doesn't mean that the Bible's authors didn't have a sense of purpose throughout their works. It just means that writing as a technique had not yet developed to the complex way it is today.
The Bible in the original languages has
plenty of conjunctions and subordinate clauses. If you don't see them it's because the translators took them out and substituted punctuation (if ancient texts had punctuation they would probably have been written differently).