Luke 15:19

And am no more worthy to be called thy son
As all the Jews were; not only by creation, and providential care, as all men are; but by national adoption: and however worthy this man might think himself to be called a Son of God before, and value himself upon it; he now sees, and was ready to own his unworthiness to be called so in any sense; and much more to be called and accounted a Son of God by special adoption;

make me as one of thy hired servants;
this is said not from a servile spirit, but to express the mean thoughts he had of himself, and the great desire he had to be fed from his father's table, in the meanest way; and what an happiness and honour it would be to him, could he be the meanest in his family, a doorkeeper in his house; which was more eligible to him, than to dwell in the tents of sin, or continue in this hungry and starving condition.