I have always thought of this parable as a one time event, but I perhaps it is not a one time event. My reason being is that I have fallen more times that I care to testify to. And that has always made me feel lost with the thinking of no return, yet each time I returned by yielding to the Voice of the Lord, who I know now NEVER leaves, [Psa 139:8 If I ascend the heavens--there Thou art , And spread out a couch in Sheol, lo, Thee!]
I was always stronger, but Id fall again.
Psa 37:24 When he falleth, he is not cast down, For Jehovah is sustaining his hand.
Pro 24:16 For seven times doth the righteous fall and rise, And the wicked stumble in evil.
So just reasoning maybe only for my benefit, but I believe not, that this could be an on going event until one comes to himself, that I and many others, have not yet come to.
I Have believed for sometime now that I am yet in the Potters hands, He aint finished with His vessels of clay, so I still wait for the, "having spent all."
Luk 15:13 `And not many days after, having gathered all together, the younger son went abroad to a far country, and there he scattered his substance, living riotously;
Luk 15:14 and he having spent all, there came a mighty famine on that country, and himself began to be in want;
Luk 15:16 And he would fain have filled his belly with the husks that the swine did eat: and no man gave unto him. This lowest of places yet?
Luk 15:17 And when he came to himself,[hadn't reached here yet] he said, How many hired servants of my father's have bread enough and to spare, and I perish with hunger!
Luk 15:18 I will arise and go to my father, and will say unto him, Father, I have sinned against heaven, and before thee,
Luk 15:19 And am no more worthy to be called thy son: make me as one of thy hired servants.