Jesus confirmed in Luke 12:6-7 that God will take care of all of our needs. Christ illustrated this by showing that God is all-knowing and all-powerful.
He said that even though five sparrows are sold for a couple of pennies, God hasn’t forgotten even a single sparrow anywhere in the world. In the grand scheme of things, a single sparrows doesn’t seem to be very important. How many sparrows must there be in the world? With over 40 known species of sparrows, the population of most species is thriving. Many countries have millions of the house sparrow alone. This doesn’t include only larger countries like the U.S., but also smaller (and more northern) countries like the Netherlands. It’s probably safe to assume that there are billions of sparrows in the world. There are probably more sparrows than there are humans. Yet the Bible tells us that not one of them is forgotten by God. He knows the location and movement of every one. Then Christ teaches that we shouldn’t be afraid, because we are each worth far more than a sparrow.
Jesus gives us another analogy by telling us that the very hairs of each of our heads are all numbered. A full head of hair contains some 150,000 individual hairs. However, God knows the exact number on every head in the world. He knows location of each head, and the placement of each hair. Just as with the sparrows, if we are each much more important than a single hair to an omniscient and omnipotent God, then we have nothing to fear.