John Climacus
John Climacus detailed the traps of the devil in his monastic treatise "The Ladder of Paradise". The first trap of the devil and his demons is to prevent people from performing good actions. In the second, one performs good but not in accordance with God's will. In the third, one becomes proud of one's good actions. Only by recognizing that all the good that one can perform comes from God can the last and most dangerous trap be avoided.