John Chrysostom

"But when Herod's birth-day was kept," saith he, "the daughter of Herodias danced before them, and pleased Herod." O diabolical revel! O satanic spectacle! O lawless dancing! and more lawless reward for the dancing. For a murder more impious than all murders was perpetrated, and he that was worthy to be crowned and publicly honored, was slain in the midst, and the trophy of the devils was set on the table. And the means too of the victory were worthy of the deeds done. …

Homily on the Gospel of Matthew 48 ↗

Theophylact of Ohrid

Behold, the wantonness! The princess dances, and the better she dances, the more evil it is. For it is shameful for a princess to be skilled at doing something unbefitting.

Commentary on Matthew ↗

Jerome

But on Herod's birthday, Herodias' daughter danced in the midst, and it pleased Herod. We have found no other to have observed their own birthday except Herod and Pharaoh, as their impiety was on equal terms, so too was their festivity.

Commentary on Matthew ↗

Hilary of Poitiers

On Herod's birthday—that is, amid the delights of corporeal things—the daughter of Herodias danced. With every enticing movement she made, she exuded sensual pleasure as though from the infidelity that arose through all the joys of Israel. The people gave themselves over to this. All were corrupted by an oath. Through sin and the pleasures of the world, the Israelites sold the gifts of eternal life. …

Commentary on Matthew 14.7 ↗

Thomas Aquinas

But on the birthday, etc. Here regarding the killing he does three things, because he could not on account of the fear of the people. First the antecedents are set forth; secondly, the killing; thirdly, the consequences. Regarding the first, three antecedents are set forth: the dancing; the promise; the request. He says therefore but on the birthday, etc. It was the custom among the ancients to celebrate their birthday, contrary to Eccl 7:2: better is the day of death than the day of birth. …

Commentary on Matthew ↗