The 70 weeks and 2,300 days
The chart below shows the relation between the 70 weeks, and the 2,300 days, and “this generation,” which is the generation Jesus represents. It runs off the chart at the right, because it continues forever.
Note that there are no gaps in the 70 weeks. Introducing gaps makes no sense in a time prophecy. Paul told Timothy, “hold fast the form of sound words,” and I suggest that to say that there are no gaps in the 70 weeks is a sound, reasonable, and true statement one can rely upon. One reason there are no gaps, is that the three sections of the 70 weeks correspond to the last three of the four periods of “seven times” in Lev. 26. The first was the exile in Babylon, which Daniel alludes to in Dan. 9:11. And this implies there are no gaps, as any gap requires a lapse in the curse, which in turn requires that Israel was temporarily reconciled to God, and that has not happened. Any reconciliation is permanent.
No one says there are gaps in the 2,300 days of Daniel 8:14. These are interpreted as years in the chart, and this long time period is compared with the 70 weeks.
There are different units in each of the three sections of the 70 weeks. In the first section, which is 7 weeks, the units are leap years in the chart. Daniel’s numbers in Dan. 12:11-12, the 1,290 days, and 1,335 days, imply that leap years of 13 months and regular years of 12 months are employed to derive these symbolic numbers, which represent the time, times and a half, or a portion of it, as I discussed in a previous post. Units of leap years also help us interpret the 70 weeks, so that no gap is required between the 70 years of exile in Babylon, and the start of the 70 weeks, at the decree of Cyrus, 538 BC. With leap years as units for the first section, and normal sabbatical cycles as units for the second section, these two sections work out nicely to the start of the ministry of Jesus. The final week, in which Jesus confirms his covenant with many, includes his earthly ministry, and the whole age of the church. Units for the last half week are spiritual, and figurative, because they apply to the heavenly Jerusalem. Earthly units do not apply to spiritual things.
There is no change in the nature of units of the 2,300 days, because this period does not apply to spiritual things. Instead, it refers to the duration of the geocentric cosmology of the Greeks, which passed away about 1750 AD, when men realized the earth revolves on its axis, not the heavens. This was the scientific revolution.