You may claim to love Jesus but your life proves you are still walking in darkness—confused, befuddled and foggy! When you are truly in love with Jesus, conversing with Him, He turns up the light. There is no darkness at all in His presence. The worst possible darkness to mankind is not in the hearts of God-hating Communist leaders or Christ-hating atheists. It is, rather, the horrible darkness that blinds so-called Christians who refuse to walk in the light.
Life evolved under conditions of light and darkness, light and then darkness. And so plants and animals developed their own internal clocks so that they would be ready for these changes in light. These are chemical clocks, and they're found in every known being that has two or more cells and in some that only have one cell.