Bible Verses about 'Lost'

For the Son of Man came to seek and to save the lost.
Luke 19:10 salvation Jesus seeking
You are the salt of the earth, but if salt has lost its taste, how shall its saltiness be restored? It is no longer good for anything except to be thrown out and trampled under people's feet.
Matthew 5:13 sin obedience evangelism

I believe that I shall look upon the goodness of the Lord
in the land of the living!
Psalm 27:13 goodness trust
Just so, I tell you, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance.
Luke 15:7 conversion repentance joy