Bible Verses about 'Lost'

For the Son of Man came to seek and to save that which was lost.
Luke 19:10 salvation Jesus seeking
You are the salt of the earth, but if the salt has lost its flavor, with what will it be salted? It is then good for nothing, but to be cast out and trodden under the feet of men.
Matthew 5:13 sin obedience evangelism

I am still confident of this:
I will see the goodness of Yahweh in the land of the living.
Psalm 27:13 goodness trust
I tell you that even so there will be more joy in heaven over one sinner who repents, than over ninety-nine righteous people who need no repentance.
Luke 15:7 conversion repentance joy