"In October, then, of the year 1540, I began the altar-picture for Messer Bindo, proposing to paint in it a scene that should represent the Conception of Our Lady, according to the title of the chapel; which subject presenting no little difficulty to me, Messer Bindo and I took the opinions of many common friends, men of learning, and finally I executed it in the following manner.
Having depicted the Tree of the Primal Sin in the middle of the picture, I painted at its roots Adam and Eve naked and bound, as the first transgressors of the commandment of God, and then one by one, bound to the other branches, Abraham, Isaac, Jacob, Moses, Aaron, Joshua, David, and the other Kings in succession, according to the order of time; all, I say, bound by both arms, excepting Samuel and John the Baptist, who are bound by one arm only, because they were blessed in the womb.
I painted there, also, with the tail wound about the trunk of the Tree, the Ancient Serpent, who, having a human form from the middle upwards, has the hands bound behind; and upon his head, treading upon his horns, is one foot of the glorious Virgin, who has the other on a Moon, being herself all clothed with the Sun, and crowned with twelve stars.
The Virgin, I say, is supported in the air, within a Splendour, by many nude little Angels, who are illumined by the rays that come from her; which rays, likewise, passing through the leaves of the Tree, shed light upon those bound to it, and appear to be loosing their bonds by means of the virtue and grace that they bring from her from whom they proceed.
And in the heaven, at the top of the picture, are two children that are holding certain scrolls, in which are written these words: QUOS EVAE CULPA DAMNAVIT, MARIAE GRATIA SOLVIT. [Those whom the fault of Eve damned, the grace of Mary saved]
In short, so far as I can remember, I had not executed any work up to that time with more study or with more lovingness and labour; but all the same, while I may perhaps have satisfied others, I did not satisfy myself, although I know the time, study, and labour that I devoted to it, particularly to the nudes and heads, and, indeed, to every part.
For the labours of that picture Messer Bindo gave me three hundred crowns of gold, besides which, in the following year, he showed me so many courtesies and kindnesses in his house in Rome, where I made him a copy of the same altar-piece in a little picture, almost in miniature, that I shall always feel an obligation to his memory. "
Giorgio Vasari, Lives of the most eminent painters, sculptors & architects Trans Gaston de Vere 1912 - 15 (Volume 10, pp 185 - 186)
"Ecce iam iste Iesus suae divinitatis fulgore fugat omnes tenebres mortis, et firma ima carceris confregit, et ejecit captivos et solvit vinctos" (Chapter 23)
"Quod Eva tristis abstulit, tu reddis almo germine"