In Sistine Chapel ceiling, how is the Ancestors of Christ of the Pictorial scheme elucidated?

Either side of the chapel has six windows, as well as two closed windows at the rear, and two above the altar which were covered by The Last Judgment. Above each window is an arched shape, referred to as a lunette. Above each of the eight most central side lunettes is a triangular spandrel (topped by symmetrical pairs of bronze nudes); the other six lunettes are below the corner pendentives.
These regions link the walls and the ceiling; the figures painted on them are intermediate in size (approximately 2 m tall), between the very large prophets on the ceiling and the much smaller papal portraits which had been painted on either side of each window in the 15th century. Michelangelo chose the ancestors of Christ as the subject of these images, thus juxtaposing Jesus' physical lineage with the popes, his spiritual successors according to the Church.Centrally placed above each window is a faux marble tablet with a decorative frame. On each is painted the names of the male line by which Jesus, through his earthly father, Joseph, is descended from Abraham, according to the Gospel of Matthew. However, the genealogy is now incomplete, since the two lunettes of the windows in the altar wall were destroyed by Michelangelo when he returned to the chapel in 1537 to paint The Last Judgment. Only engravings, based on a drawing that has since been lost, remain of them. The sequence of tablets seems somewhat erratic as one plaque has four names, most have three or two, and two plaques have only one. Moreover, the progression moves from one side of the building to the other, but not consistently, and the figures the lunettes contain do not coincide closely with the listed names. These figures vaguely suggest various family relationships; most lunettes contain one or more infants, and many depict a man and a woman, often sitting on opposing sides of the painted plaque that separates them. O'Malley describes them as "simply representative figures, almost ciphers".The figures in the lunettes appear to be families, but in every case they are families that are divided. The figures in them are physically divided by the name tablet but they are also divided by a range of human emotions that turn them outward or in on themselves and sometimes towards their partner with jealousy, suspicion, rage or simply boredom. In them Michelangelo has portrayed the anger and unhappiness of the human condition, painting, in Andrew Graham-Dixon's words, "the daily round of merely domestic life as if it were a curse". In their constraining niches, Gabriele Bartz and Eberhard König say, the ancestors "sit, squat and wait". Of the 14 lunettes, the two that were probably painted first, the families of Eleazar and Mathan and of Jacob and his son Joseph, are the most detailed. They become progressively broader towards the altar end, as Michelangelo painted faster and more furiously.Because of the constraints of the triangular shape, in each spandrel the figures are seated on the ground. Six include groups of figures, mostly adults with a child. Of the two remaining, one shows a woman with shears trimming the neck of a garment she is making while her toddler looks on. The biblical woman who is recorded as making a new garment for her child is Hannah, the mother of Samuel, whose child went to live in the temple; the male figure in the background is wearing a distinctive hat that might suggest that of a priest. Another female figure sits staring out of the picture.Prior to restoration, of all the paintings in the chapel, the lunettes and spandrels were the dirtiest. Added to this, there has always been a problem of poor daytime visibility of the panels nearest the windows because of halination, the effect of bright areas blurring over less bright ones.
Last Judgment Abraham Samuel Eleazar Jesus lunette Eberhard König Andrew Graham-Dixon Gospel fig Matthew angel ancestors of Christ altar pendentive nude The Last Judgment Gospel of Matthew Hannah Eleazar and Mathan art spandrel Joseph Michelangelo