Matthew 24:35 NIV
Heaven and earth will pass away, but my words will never pass away.
God is the father of spirits, He addresses the Human spirit, so when God speaks, He reveals peculiar principles that only a particular person can act upon.
1 Peter 1:2 NIV
who have been chosen according to the foreknowledge of God the Father, through the sanctifying work of the Spirit, to be obedient to Jesus Christ and sprinkled with his blood: Grace and peace be yours in abundance.