Sistine Chapel ceiling reread the Old Testament while he was painting the ceiling, drawing his inspiration from the words of the scripture, rather than from the established traditions of sacral art. A total of 343 figures were painted on the ceiling. To reach the chapel's ceiling, Michelangelo designed his own scaffold, a flat wooden platform on brackets built out from holes in the wall near the top of the windows, rather than being built up from the floor. Mancinelli speculates that this was in order to cut the cost of timber. According to Michelangelo's pupil and biographer Ascanio Condivi, the brackets and frame
Sistine Chapel congregations. These included the Christmas Day and Easter masses, at which the Pope himself was the celebrant. The other 27 masses could be held in a smaller, less public space, for which the "Cappella Maggiore" was used before it was rebuilt on the same site as the Sistine Chapel. The "Cappella Maggiore" derived its name, the Greater Chapel, from the fact that there was another chapel also in use by the Pope and his retinue for daily worship. At the time of Pope Sixtus IV, this was the Chapel of Pope Nicholas V, which had been decorated by Fra Angelico.