19“ ‘When a woman has her regular flow of blood, the impurity of her monthly period will last seven days, and anyone who touches her will be unclean till evening. 20“ ‘Anything she lies on during her period will be unclean, and anything she sits on will be unclean. 21Anyone who touches her bed will be unclean; they must wash their clothes and bathe with water, and they will be unclean till evening. 22Anyone who touches anything she sits on will be unclean; they must wash their clothes and bathe with water, and they will be unclean till evening.