He adds that eternal judgment is incomprehensible to mortal ken, that mere professions are vain, and that many so-called Christian potentates (some of whom he names) will present a sorry figure on Judgment Day.
Canto XX.

After a period of silence, the same Eagle (an emblem of the Empire) proceeds to exalt certain rulers, especially those glorified spirits which form the pupil of his eye (David), and his eyelids (Trajan, Hezekiah, Constantine).

As he mentions their names they glow like priceless rubies, and he explains that, although some of them lived before Christ was made flesh, all have been redeemed because Faith, Hope, and Charity are their sponsors.
"The three nymphs, Whom at the right wheel thou beheld'st advancing, Were sponsors for him, more than thousand years Before baptizing.

O how far removed, Predestination! is thy root from such As see not the First Cause entire: and ye, O mortal men! be wary how ye judge: For we, who see our Maker, know not yet The number of the chosen; and esteem Such scantiness of knowledge our delight: For all our good is, in that primal good, Concentrate; and God's will and ours are one." _Canto XXI._ Meantime Beatrice, who has grown more and more beautiful as they rise, explains, when Dante again gazes upon her, that she no longer dares smile, lest he be consumed like Semele when she beheld Jove.

The magnetic power of her glance suffices again, however, to transfer him to the seventh heaven, that of Saturn (revolved by Thrones).