'Sparrows' in the Bible

"Aren't two sparrows sold for an assarion coin? Not one of them falls on the ground apart from your Father's will,

Therefore don't be afraid. You are of more value than many sparrows.

"Aren't five sparrows sold for two assaria coins? Not one of them is forgotten by God.

But the very hairs of your head are all numbered. Therefore don't be afraid. You are of more value than many sparrows.