The 99 are His Seep that are IN the Fold, they are NEVER Left Behind
See that you do not look down on any of these little ones. For I tell you that their angels in heaven always see the face of My Father in heaven.
What do you think? If a man has a hundred sheep and one of them goes astray, will he not leave the ninety-nine on the hills and go out to search for the one that is lost? And if he finds it, truly I tell you, he rejoices more over that one sheep than over the ninety-nine that did not go astray.
In the same way, your Father in heaven is not willing that any of these little ones should perish.
Now compare this to Matthew 25:1-13
But while they were on their way to buy it, the bridegroom arrived. Those who were ready went in with him to the wedding banquet, and the door was shut.
Later the other virgins arrived and said, ‘Lord, lord, open the door for us!’
But he replied, ‘Truly I tell you, I do not know you.’
Therefore keep watch, because you do not know the day or the hour.
The Door NEVER opens for them - Now is the time to turn away from "adding to and taking away from His word's."
BEFORE the Door is shut and will not open.