Why do church age believers understand the timeline differently than the disciples and early Jewish believers?
Church age believers understand the timeline differently because God interrupted His original program for the nation of Israel and turned to the Gentiles instead. That interruption means the timeline now includes the church age, while the disciples and early Jewish believers did not understand this transition from Israel to the Gentiles.
Les explains that he uses the timeline to help people become interested in the Word of God. He says he will complicate it a little by showing the difference between what the disciples and early Jewish believers understood and what church age believers now understand. The reason for that difference is that God interrupted His original program for the nation of Israel and turned to the Gentiles instead. In the scriptural timeline, Les begins with the Abrahamic Covenant in Genesis 12; if Adam was created in 4004, and most chronologers agree on that, then from Adam to the call of Abram covers 2000 years.