"Please, O Lord, for I am Your servant." This teaches that David would humble himself in every place, as it says, "And he said to him, 'Whose son are you, young man?' And David said, 'I am the son of your servant, Jesse.'" (1 Samuel 17:58) Because he did not compare himself to a servant who was born in the house, but to a servant who is taken from the market. Another explanation is that David said, "I am a descendant of she who said, 'I am Ruth, your maidservant. Spread your cloak over your maidservant.'" (Ruth 3:9) "You have opened to the disciplined." You have opened the prohibition of the date palm frond and permitted it. "You have opened to the forbidden and made it permissible."