Virtues are known as the Spirits of Motion and control the elements. They are sometimes referred to as "the shining ones." They govern all nature. They have control over seasons, stars, moon; even the sun is subject to their command. They are also in charge of miracles and provide courage, grace, and valor.According to traditional Thomistic division, there are 9 choirs, or ranks, of angels in three spheres: 1) Seraphim, Cherubim, Thrones; 2) Dominions, Virtues, Powers; 3) Principalities, Archangels, Angels.
Angels are powerful creatures; not to be trifled with. These are not fat baby angels with wings, these are celestial creatures that exude the Power of God with which they are imbued.
From Dionysius the Areopagite: [source]
The list of the seven virtues include the 3 Theological virtues of Faith, Hope, and Charity as well as the 4 Cardinal virtues of Prudence, Justice, Temperance, and Fortitude.
"The name of the holy Virtues signifies a certain powerful and unshakable virility welling forth into all their Godlike energies; not being weak and feeble for any reception of the divine Illuminations granted to it; mounting upwards in fullness of power to an assimilation with God; never falling away from the Divine Life through its own weakness, but ascending unwaveringly to the superessential Virtue which is the Source of virtue: fashioning itself, as far as it may, in virtue; perfectly turned towards the Source of virtue, and flowing forth providentially to those below it, abundantly filling them with virtue."