'Ninety nine' in the Bible

And when Abram was ninety-nine years old, Jehovah appeared to Abram and said to him, I am the Almighty God! Walk before Me and be perfect.

And Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin.

What man of you, having a hundred sheep, if he loses one of them, does not leave the ninety-nine in the wilderness and go after that which is lost until he finds it?

I say to you that likewise joy shall be in Heaven over one sinner who repents, more than over ninety-nine just persons who need no repentance.