Genesis 1 - Light

Question: Could u explain how on day one God created light, but on day four He created the sun, i could see how there could be light without the sun, but how can there be changes like day and night?

Answer: This is a complex subject with many opinions. Here is a simple perspective. The sun is not the only source of light, so when He created light, He created the light spectrum. Perhaps it was His own light that shined first, just as He will light the new heavens and earth (Rev 21:23). Evening and morning is a reference to time and rotation of the earth. -PJ