Are not five sparrows sold for two pennies? Yet not one of them is forgotten by God. And even the very hairs of your head are all numbered. So do not be afraid; you are worth more than many sparrows.
It can happen in the middle of something ordinary, like stirring a pot or waiting at a red light. You reach for the sound of their laugh and find it has gone a little quiet, or you try to picture their face and the details have softened at the edges.