Luke 15:11

We have here the parable of the prodigal son, the scope of which is the same with those before, to show how pleasing to God the conversion of sinners is, of great sinners, and how ready he is to receive and entertain such, upon their repentance; but the circumstances of the parable do much more largely and fully set forth the riches of gospel grace than those did, and it has been, and will be while the world stands, of unspeakable use to poor sinners, both to direct and to encourage them in repenting and returning to God. Now, I. The parable represents God as a common Father to all mankind, to the whole family of Adam. We are all his offspring, have all one Father, and one God created us, Mal 2:10. From him we had our being, in him we still have it, and from him we receive our maintenance. He is our Father, for he has the educating and portioning of us, and will put us in his testament, or leave us out, according as we are, or are not, dutiful children to him. Our Saviour hereby intimates to those proud Pharisees that these publicans and sinners, whom they thus despised, were their brethren, partakers of the same nature, and therefore they ought to be glad of any kindness shown them.

— Matthew Henry's Concise Commentary (public domain)