...and a day is a thousand years. So logically speaking it can not be both at the same time nor is it " for us". Scripture is telling us that God is outside of time where both one day and a thousand years are the same. Blessings
Actually, it can be both at the same time, even for us. (My algebra teacher taught me to show my work, so here goes.)
Using this standard relativity formula:
We can make these calculations.
1.) 1000 years = 365,240 days. (Rounded for whole leap years) Therefore t = 1 day and t(o) = 365,240 days. c = the speed of light (299,792 km/s or 186,282 mi/s, but for now use c=1 and we'll multiply it back later.) That leaves us to solve for "v"
2.) Substitute each (t) and divide both sides by t(o) and you get:
3.) Now square both sides and substitute c = 1 for now:
4.) Add v-squared to both sides, and subtract 1/t(0)-squared from both sides:
5.) Now use a calculator with a lot of digits to calculate the right side:
6.) Take the square root of both sides:
This is the ratio of the speed of light one must travel for one day of the traveler (God) to be equivalent to 1000 years for an observer (man). Multiply that ratio by
299,752,458 meters per second. or
186,282.397 miles per second. (for the Americans)
Other calculations can be done for general relativity which takes into account gravitational forces. In other words, if God was very close to the event horizon of a black hole, an observer could also wait 1000 years for a day to pass for God.
In an early universe where gravity does not exist yet, because of the physics of the big bang, other considerations might come into play. Now to be clear, the scriptures do not
explicitly say that God is outside space and time, but it's easy to argue that it may be implied, assuming one does not want to place any kind of restrictions on God's power.
In any event, now that you've seen these calculations, you will know what speed people are referring to when they tell you "Godspeed!"