The earth is slowing down but that means the energy is being transferred. Our time is a measurement of the spin rate & orbit of the earth only there is a wobble from the other planets so that is why the length of the day & the year is not exactly consistent. Einstein of course tells us that time is relative. At the speed of light time does not change because there is no decay.
Time is a fixed period where an event takes place. We have ages and eras, like the church age and then we will have the 1,000 year reign of Christ. Then there will be a new heaven and a new earth as the old fades away.
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To every [thing there is] a season, and a time to every purpose under the heaven:
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A time to be born, and a time to die; a time to plant, and a time to pluck up [that which is] planted;
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A time to kill, and a time to heal; a time to break down, and a time to build up;
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A time to weep, and a time to laugh; a time to mourn, and a time to dance;
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A time to cast away stones, and a time to gather stones together; a time to embrace, and a time to refrain from embracing;
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A time to get, and a time to lose; a time to keep, and a time to cast away;
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A time to rend, and a time to sew; a time to keep silence, and a time to speak;
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A time to love, and a time to hate; a time of war, and a time of peace.
A day (24 hours) is as a 1000 years to God - because God is energy - they very thing that causes clocks to slow.
Are you sure? According to theory the universe began expansion faster than c and has done nothing but "continue to increase in acceleration", yet we see decay. Decay is but a measurement of energy content. The more energy a system has - the slower it decays. If you could reach the speed of light you would become pure energy - and time would then have no meaning and so would live "forever". But you can not accept Big Bang theory and reject the theory at the same time. Either it began acceleration faster than c or it didn't.
Energy is gained by acceleration.
https://en.wikipedia.org/wiki/Kinetic_energy
"It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes."
The only change in speed, has according to theory - been an increase in acceleration.
Ever asked yourself why dinosaurs were so much larger in the past? Added energy would cause added mass E=mc^2. Until the increasing mass became too much for their frames at that size to handle any longer.
Misconceptions of time and energy. A bullet in it's own frame measures zero Kinetic energy - yet we know without a doubt when it hits the target it possesses it.
At the speed of c your clock and ruler would still read zero energy and c would still appear to be c. You confuse proportional to same. A second hand is a prime example. A point near the hub measures a smaller distance and shorter elapsed time than a point near the tip which is traveling faster. Both call the elapsed time a second - even if we understand they are not of the same duration - but are proportional.
You can never reach c by using your own clocks and rulers, this does not mean you can not reach c, merely that your clocks and rulers will always show you to be stationary with respect to light with zero kinetic energy. At 1/2 of c the accelerating spacecraft will to the one in that frame appear to be the stationary frame the second it stops accelerating. Your speedometer will read zero acceleration - despite traveling at 1/2 of c - just as one does on earth - despite it's velocity around it's own axis - it's velocity around the sun - the suns velocity around the galaxy - and the galaxies velocity through space.
Zero - despite knowing energy must have been gained and remained the same according to all the science we know.