Tebila, located in Mexico City, is a religious building. In this case we sought to solve the architectural language with simplicity, emphasizing the spatial intentions to the management of natural light and the selection of sober materials, which grant dignity and an approach to the earthly plane while the building’s own use seeks an approach to God. From the architectural design, the capabilities of the materials were explored so that both the structural columns solved in marble ashlar, and the concrete elements work structurally. The tebila is a religious bath for women. The architectural program requires the submersion piles to be carved into the earth; this means that there is a basement level to which it seemed vital to induce natural light, enriching both the user experience and the architectural language. With the same ideal we proposed interior patios, contemplative gardens, lattices that act as mullions to the interior, all resolved in materialities of marble, wood and glass, an overwhelming language that resolves in each space the crossed ventilation, the permeability of natural light to all spaces, taking advantage of the benevolent climate most of the year in Mexico City. In the XXI Century, the work of masonry of the marble blocks recalls the commitment that has been made over the centuries to religious buildings, architecture and their expression to reflect the feelings of its inhabitants. The collection of rainwater in each of the tanks, which then pass to the ‘mikve’ or tubs, is the main and essential element in the ar- chitectural design of the tebila due to the way it is collected and distributed throughout the building. The women who use them must be immersed in it to achieve the main objective which is purification. The use of natural illumination also becomes a main element because it seeks to enter the user into a space full of mysticism as is the practice of religion.