First, at the beginning of the creation of a material universe (“heavens and earth”) in Genesis 1:1, God possibly used the mechanism of a black hole to hold in all matter in a singularity with the greatest force of gravity to cause biblical time to measure in terms of earth centric 24 hour days.
Second, God possibly used the mechanism of a white hole to reverse the inward flow of the black hole, ejecting matter to accelerate outwards into the cosmos of an expanding universe, where an abundance of light is found, because God said, “Let there be light” (Genesis 1:3 NIV) on the first biblically calibrated day — “there was evening, and there was morning — the first day” (Genesis 1:5 NIV).
Third, a time dilation is taking place because matter and light are accelerating outward into God’s creation of interstellar space, which is biblically designated the “expanse” (NASB), the “vault” (NIV), or the “firmament” (KJV), on the third day of creation (Genesis 1:6-8). That light is measured in relative light years away from the waters below interstellar space (where earth exists) and the waters above it.
Fourth, the relativity of gravity affects the measurement of time. As Dr. D. Russell Humphreys (formerly of the Sandia Particle Beam Fusion Project) wrote: “Gravitational time distortion in the early universe would have meant that while a few days were passing on earth, billions of years would have been available for light to travel to earth. It still means that God made the heavens and earth (i.e., the whole universe) in six ordinary days, only a few thousand years ago. But with the reality revealed by GR, we now know that we have to ask—six days as measured by which clock? In which frame of reference? The mathematics of this new theory shows that while God makes the universe in six days in the earth’s reference frame (‘Earth Standard Time,’ if you like), the light has ample time in the extra-terrestrial reference frame to travel the required distances.”
Humphreys, Russell. Starlight & Time (pp. 11-12). Master Books. Kindle Edition.
Fifth, starlight would be measured in light years, while in earth’s reference frame, God “made the stars” (Genesis 1:16 NIV) only on the fourth literal day (1:19).
Sixth, Einstein’s Theory of General Relativity (GR) is science’s best statement concerning gravity since Sir Isaac Newton. It does not demand my conclusions about a young earth creation, but it allows for it. “According to your faith let it be done to you” (Matthew 9:29 NIV).
Seventh, whether I am ultimately wrong about any of my conclusions or applications, may God only be justified. “Let God be true, and every human being a liar. As it is written: So that You may be proved right when you speak and prevail when You judge” (Romans 3:4 NIV).
For reference, see a previous article, “Starlight and Time”: An Amazon Book Review.