Jesus loves the lost.
Jesus looks for the lost.
The word lost communicates value and worth.
It communicates that something is not where it belongs, and it is so valuable that it is searched for until it is found, such as a mother searching for a lost child in a crowded mall.
The lost to Jesus are those who are not where they belong, which is a love relationship with God as Father.
Jesus told three stories to communicate how much the lost are loved and how far one will go and what one will do to find the lost.