Are not five sparrows sold for two pennies? And not one of them is forgotten before God.Why, even the hairs of your head are all numbered. Fear not; you are of more value than many sparrows. Luke 12:6-7
Your hair is numbered?
Why would anyone number hair?
Maybe there is a reason for that, but I think the meaning is simply that you matter to God. If a small detail like hair matters, certainly the events of your day are important to Him as well. Your feelings, worries and concerns, all of your tomorrows. Everything.