Heroic virtue is a phrase coined by Augustine of Hippo to describe the virtue of early Christian martyrs and used by the Roman Catholic church. The Greek pagan term hero described a person with possibly superhuman abilities and great goodness, and "it connotes a degree of bravery, fame, and distinction which places a man high above his fellows". The term was later applied to other highly virtuous persons who do extraordinary good works.
Heroic virtue is one of the requirements for beatification in the Catholic Church. The modern process for declaring heroic virtue is internal to the church and conducted by those in senior positions.
Quoting the Catholic view from the article on Heroic Virtue by J. Wilhelm in the 1917 Catholic Encyclopedia:
Together with the four cardinal virtues the Christian saint must be endowed with the three theological virtues, especially with Divine charity, the virtue which informs all other virtues.
As charity stands at the summit of all virtues, so faith stands at their foundation. For by faith God is first apprehended, and the soul lifted up to supernatural life. Faith is the secret of one's conscience; to the world it is made manifest by the good works in which it lives, "Faith without works is dead" (James 2:2). Such works are: the external profession of faith, strict observance of the Divine commands, prayer, filial devotion to the Church, the fear of God, the horror of sin, penance for sins committed, patience in adversity, etc. All or any of these attain the grade of heroicity when practiced with unflagging perseverance, during a long period of time, or under circumstances so trying that by them men of but ordinary perfection would be deterred from acting.
Hope is a firm trust that God will give us eternal life and all the means necessary to obtain it; it attains heroicity when it amounts to unshakeable confidence and security in God's help throughout all the untoward events of life, when it is ready to forsake and sacrifice all other goods in order to obtain the promised felicity of heaven.