These are the things that we assume as Mid-Acts right division dispensationalists.
The First assumption is that God exists. Although many today deny His existence, Romans one describes how mankind in the beginning knew God. But then they wanted nothing to do with Him. They changed who He was into the creature, and therefore God gave them up.
The second assumption we make is that the Bible is true. What the world thinks about the Bible is seen in a man on the street interview.
The third assumption that we make is that faith is required for the first two assumptions. Faith is believing that God exists, that He gave us His word, preserved His word, and what is written in it is true.