FAITH IS THAT SUPERNATURAL VIRTUE by which we conquer temptations.
“By faith the saints conquered kingdoms, wrought justice, obtained promises, stopped the mouths of lions, quenched the violence of fire, recovered strength from weakness, became valiant in battle, and put to flight the armies of foreigners. Through faith women received their dead raised to life again. But without faith it is impossible to please God, for he who comes to God must believe that he exists and is a rewarder to them that seek him” (Heb 11:33).
Through faith we overcome temptations. This is clear because every temptation is either from the devil, the world, or the flesh. The devils temps us so that we might not obey God nor subject ourselves to him. This diabolical temptation is removed through faith, for through faith we know that God is the Lord.
“Be sober and watch, because your adversary the devil, as a roaring lion [goes] seeking whom he may devour” (1 Pt 5:8).
The world tempts us, either by seducing us with its vanities or by terrifying us with its misfortunes. But even these we can conquer through faith, which enables us to believe in another life superior to this and teaches us to believe that better things are awaiting us.
Hence by faith, we conquer the vanities of this world and fear not its adversaries. “This is the victory which [overcomes] the world, your faith” (1 Jn 5:4).
The flesh temps us by attracting us to the pleasures of present life, which pleasures, at most, are fast fleeting and perishable. But faith warns us that though these pleasures, if we cling to them improperly, we will lose eternal happiness.
– St. Thomas Aquinas