In Christian theology, the world, the flesh, and the devil (Latin: mundus, caro, et diabolus; Greek ό κοσμος, ή σαρξ, και ό διαβολος) have been singled out "by sources from St Thomas Aquinas" to the Council of Trent, as "implacable enemies of the soul". The three sources of temptation have been described as: and viewed in opposition to the three persons of God, i.e. the Trinity.