Psalm 8:4

What is man that You are mindful of him, and the son of man that You care for him?

Matthew 10:29-31

Are not two sparrows sold for a copper coin?  And not one of them falls to the ground part from your Father's will.  But the very hairs of your head are all numbered.  Do not fear therefore; you are of more value than many sparrows.

John 1:12

But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name

Romans 8:16

The Spirit itself bears witness with our spirit, that we are the children of God