2 Samuel 6:14-16

14And David was dancing before the Lord with great enthusiasm, and David was wearing a linen ephod [a priest’s upper garment].

15So David and all the house of Israel were bringing the ark of the Lord up [to the City of David] with shouts [of joy] and with the sound of the trumpet.

16Then, as the ark of the Lord came into the City of David, Michal, Saul’s daughter [David’s wife], looked down from the window above and saw King David leaping and dancing before the Lord; and she felt contempt for him in her heart [because she thought him undignified].