In my opinion, the Sun is nowhere NEAR 3000 miles up. It's more like 100-200 miles TOPS.
Take a look at this picture taken from a weather balloon at 110,000 Feet (~20 miles):

Look at the angle of the rays and the position of the Sun and you can see it's only about 100-200 miles up.
The Stars, on the other hand, are much higher up near the top of the Firmament.
You have to remember that the Sun doesn't take the same course every day, and has various routes throughout the year. The Book of Enoch explains the Sun's courses more thoroughly:
http://www.sacred-texts.com/bib/boe/boe075.htm
Here is a pretty good video explaining the angles of the Sun's rays on flat earth:
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This thread has been inactive for a while, but here is something directed to iWitness.:
1.Do you claim the moon and the sun are about the same distance from the earth and about 100 or 200 miles from the earth ?
Yes or no ?
2.On what do you base your measurements ?
Please show your methods and information for your measurements.
3.Amateur radio operators can send and receive radio signals.
Truth or a lie ?
4.Amateur radio operators can send signals to the moon.
Truth or lie ?
5.Amateur radio operators can send signals to the moon and have them bounce off the moon in an operation called "Moon Bounce."
Truth or lie ?
6.Amateur radio operators on earth can receive signals bounced off the moon.
Truth or lie ?
7.Amateur radio operators can measure the time it takes for a signal to the moon, bounce off the moon and be received back on earth as about 2.5 seconds.
Truth or lie ?
8.Amateur radio operators can determine the return path is one half the total "2-Way Time" or about 1.275 seconds.
Truth or lie ?
9.The speed of radio waves has been determined to be 300,000 kilometers per second or 186,000 miles per second.
Truth or lie ?
10. Distance is equal to times times speed .
Truth or lie ?
11.Multiply the time (1.275 seconds) times the speed (186,00 miles per second) equals 238,150 miles.
Truth or lie ?
12.This figure is close to the approximate known measured distance to the moon of about 250,000 miles - plus or minus due to relatively small variations in this distance.
Truth or lie ?
13. Your figures of 100 or 200 miles.
Truth or lie ?