Jesus’ parable of the prodigal son in Luke 15: 11 - 32 has a compound fulfilment. It can be compared with the original Jewish Church (who represents the elder son) at Pentecost which never fell whilst the younger son is the Gentiles that came in after the apostle Paul started out but who fell in the Dark Ages and returned back under Luther, Wesley, Pentecost and the prophet’s ministry (Malachi 4: 5).
The original Jewish Church was the faith of the apostolic fathers which remained as the pattern through the seven church ages; this is what the Gentiles (the younger son) fell from. Adoption for the Gentiles (Luke 15: 22) came at the end time which was what the original Jewish Church at Pentecost had the earnest of.
The parable is about sons (not servants) because it is sons that know the mysteries (secrets) of the father: both got a portion of the father’s inheritance: one at Pentecost and the other at the end time.
Luke 15: 11 - 32 can then be seen in a twofold manner wherein the prodigal son represents a son of God who experiences Christ’s redemption and positional placing from their former fallen state, or he can represent a son of God who wastes his gifting through disobedience and thus loses his eternal reward but does not lose his sonship. The elder son would therefore represent a son of God who is faithful to the Father’s business whilst other sons of God waste the gifts that God has given them.