So Jesus used this illustration:
"If you had one hundred sheep, and one of them strayed away and was lost in the wilderness, wouldn't you leave the ninety-nine others to go and search for the lost one until you found it?
And then you would joyfully carry it home on your shoulders.
When you arrived, you would call together your friends and neighbors to rejoice with you because your lost sheep was found.
In the same way, heaven will be happier over one lost sinner who returns to God than over ninety-nine others who are righteous and haven't strayed away!"