It seems like a simple concept: we generally learn through repetition. From learning to cross a street as a child as Mom repeatedly says “look both ways” to the astronaut learning procedures in the International Space Station, repetition helps as we learn something. God knows. He set the heavens in a magnificent periodic schedule that acts as a clock within a clock. Between our rotation speed and our tilt relative to the general plane of planetary orbits and the sun, we see nightly and seasonal variety that repeats, and repeats, and repeats. When He explains that the heavens declare his glory (in Psalm 19), or that his creation of the heavens is good (in Genesis), or that each type of heavenly body has a splendor all its own (in 1 Corinthians), he repeats that the heavens point to him. Then, he repeats them in the sky to see for ourselves.
So when we go to meet him in judgement, he will have already seen our repetitive response. It will show: our crediting him for his mighty works or our discrediting him for what we never believed he did anyway. We don’t remember all the choices we make as we learn and respond over and over again. He, on the other hand, remembers every choice, every opportunity for choosing, every person that makes the choices…no matter where or when they take place.
Consider me. For years I did not credit God with anything. He began draw me. I began to seek him. I heard of Jesus Christ and chose to believe him. As years went by I began to see what he had made in a better way. It became more and more obvious that all this wondrous complexity was wrought by his hands rather than some mysterious natural force that disobeyed all laws and yielded its own complexity and information all by itself. Slowly I saw the heavens differently. Then I began to see them with anticipation. Then I began to record what I saw–going back to objects over and over again, marveling at their characteristics, placement, and schedule of appearance.
On these summer nights, for instance, the Ring Nebula is high in the sky. I have seen it with 3 or 4 instruments many times. I have drawn it several times. I look at it every year and marvel that God would place such a unique object in the sky. Here is an old observing sheet from 2007.
Remember: repetition in observing is valuable–making many opportunities to thank Him for his created heavens–if you care to believe that He made them.