Here is a good Spurgeon sermon on the Prodigal Son. Below is an excerpt:
The text - Luke 15:20 "...And kissed him much."
But these many kisses meant even more than this. They revealed his father's EXCEEDING JOY. The father's heart is overflowing with gladness, and he cannot restrain his delight. I think he must have shown his joy by a repeated look. I will tell you the way I think the father behaved towards his son who had been dead, but was alive again, who had been lost, but was found. Let me try to describe the scene. The father has kissed the son, and he bids him sit down; then he comes in front of him, and looks at him, and feels so happy that he says, "I must give you another kiss," then he walks away a minute; but he is back again before long, saying to himself, "Oh, I must give him another kiss!" He gives him another, for he is so happy. His heart beats fast; he feels very joyful; the old man would like the music to strike up; he wants to be at the dancing; but meanwhile he satisfies himself by a repeated look at his long-lost child. Oh, I believe that God looks at the sinner, and looks at him again, and keeps on looking at him, all the while delighting in the very sight of him, when he is truly repentant, and comes back to his Father's house.