Luke 15:21

But when he (finally) came to his senses, he said, “How many of my father’s hired men have more than enough food, while I am dying here of hunger”.  I will get up and go to my father and I will say to him, “Father, I have sinned against heaven and in your sight.”

With the love and grace of God, the father never gives up on the prodigal son.  We can never know how much our prayers mean to the saving of the lost soul.  God didn’t give up on us, and we were all prodigals at one time, and it took time for us to come to our senses.  Keep praying for the return of the prodigal.