Daniel 3 speaks of being cast into a fiery furnace the 'same hour'--pointing to the hour of Great Tribulation that began in the year 1988, the 13,000th year of earth's history.
Significantly, in Daniel chapter 3, a chapter which is an historical parable describing the events of the Great Tribulation, Shadrach, Meshach, and Abednego are each mentioned 13 times.
About as much of a coincidence as the listing of the musical instruments in the same chapter. 6
musical instruments are listed. The list is given 4 times. However, 1 out of the 4 listings omits 1 instrument. Therefore we have 6 + 6 + 6 + 5 = 23 musical instruments are listed in Daniel chapter 3.
It just so happens that in the year 1988 (13,000th year of earth's history) the Great Tribulation began and continued for 23 years.
The 23 musical instruments point to the 23 year Great Tribulation period.
The 13 mentions (each) of the three young Jews points to the time the Great Tribulation would begin (13,000th year).