The chapter Luke 15 explains the story of the lost (sheep, coin, son) yet one salient unexplained lost was the prodigal brother (the elder brother of the prodigal). He was home with the father yet was lost, remember not all who wander are lost.
When you consider his remark to his loving father you will be amazed (Luke 15:25-32). He failed to realise that "grace doesn't give you what is reserved, grace gives you what is deserved"
