Everyone divides the Bible.
No honest student of the scripture, taking it literally, thinks all of the Bible is for their participation. The important issue, then, is right division.
The most common division in scripture is between the old and new testaments. It is right to divide the old and new covenants given to Israel, but this is not the greatest division.
The most important division in the Bible is between what God said he would do through the prophets since the world began, and what God is now doing described in the revelation of the mystery kept secret since the world began.
If you want to see this division clearly start by comparing Acts 3:21 and Romans 16:25.
Peter preached in Acts 3:21 what “God hath spoken by the mouth of all his holy prophets since the world began.”
Later, Paul preached in Romans 16:25 that “which was kept secret since the world began, but now is made manifest…”
This is why it is right to divide Peter from Paul: they taught something different. Even if it is hard to see all that they taught differently, we know that they taught something different about what God was doing.
Rightly dividing prophecy from mystery will eventually make the gospel, doctrine, pattern, walk, identity, and ministry of the church abundantly clear for you.
If you are new to right division and are overwhelmed, then start here.
See this difference between prophecy and mystery, and watch your spiritual understanding grow (Eph 3:9-10).
For His glory,
Justin “make all men see” Johnson