2 Samuel 6:14-16

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