An Angel
Examples
An angel is an intelligent essence, always in motion. It has free will, is incorporeal, serves God, and has been bestowed with immortality. Only the Creator understands its true nature.
The Virgin Mary, being obedient to his word, received from an angel the glad tidings that she would bear God.
An angel fell from Heaven without any other passion except pride, and so we may ask whether it is possible to ascend to Heaven by humility alone, without any other of the virtues.
Not even an angel can fulfill two missions at once.
A baby is an angel whose wings decrease as his legs increase.
All skill is in vain when an angel pees in the touchhole of your musket.