2 Samuel 6:16

But even the dancing of the body is considered praiseworthy in honor of God. In fact, David danced before the Ark of the Lord and Michal, the daughter of Saul, saw him dancing and playing musical instruments in the presence of the Lord. After he returned home, she said to him, 'How the king of Israel has distinguished himself today! He has exposed himself in the sight of the maidservants of his servants, as one of the rabble might shamelessly expose himself!' David said to Michal in the presence of the Lord, 'It was before the Lord, who chose me rather than your father or anyone from his house when he appointed me ruler over the Lord's people Israel and Judah. I will celebrate before the Lord. I will become even more undignified than this, and I will be humiliated in my own eyes. But by these slave girls you spoke of, I will be held in honor.' And Michal, he said, had no son to the daughter of Saul until the day of his death. It is a clear example, therefore, that even the Prophet who played on the musical instruments and danced before the Ark of the Lord, was justified; and she who criticized him was condemned to barrenness.

On 2 Kings 6, upon the text: Michal, the daughter of Saul, looking out, saw King David leaping and dancing, and she despised him in her heart; Gregory says: "Behold, the one whom the Lord singularly preferred above all others despises himself before the Lord by making himself equal to the least and by exhibiting what is abject. The power of kingship is not recalled to memory; he does not fear to become vile in the eyes of his subjects by dancing. What others may think of these deeds, I do not know; I am more amazed at David dancing than at David fighting: by fighting he conquered his enemy, but by dancing before the Lord he conquered himself." If, therefore, to conquer oneself is a work of perfect virtue, and this is accomplished through self-abasement: therefore self-abasement is a work of perfect virtue.