The parable of the prodigal son, as it is commonly known, is, in fact, an allegorical history of man. It shows man in his innocence, in his rebellion, and, finally, in his redemption. It is an allegory of conversion, but it is also an allegory of the life of Christ because the life of Christ and the lives of His children are closely intermingled. The life Christ lived, He lived as the new Adam. The parable shows the ready character of divine grace. The Lord wants to take us back again. It is also a description of what is to be a Christian, to repent and return and to find that it was God who was working on you all along.
Thy Kingdom Come: Lent and Easter Sermons
David H. Peterson