'Sparrows' in the Bible

Aren't two sparrows sold for a penny? Yet not one of them falls to the ground apart from your Father's will.

So do not be afraid; you are more valuable than many sparrows.

Aren't five sparrows sold for two pennies? Yet not one of them is forgotten before God.

In fact, even the hairs on your head are all numbered. Do not be afraid; you are more valuable than many sparrows.