Screwtape is a character in the book The Screwtape Letters

The Screwtape Letters

The Screwtape Letters is a satirical Christian apologetics novel written in epistolary style by C. S. Lewis, first published in book form in February 1942...

and the sequel essay Screwtape Proposes a Toast , both of which written by Christian author

Author

An author is broadly defined as "the person who originates or gives existence to anything" and that authorship determines responsibility for what is created. Narrowly defined, an author is the originator of any written work.-Legal significance:...

 C. S. Lewis

C. S. Lewis

Clive Staples Lewis , commonly referred to as C. S. Lewis and known to his friends and family as "Jack", was a novelist, academic, medievalist, literary critic, essayist, lay theologian and Christian apologist from Belfast, Ireland...

. A devil

Devil

The Devil is believed in many religions and cultures to be a powerful, supernatural entity that is the personification of evil and the enemy of God and humankind. The nature of the role varies greatly...

, Screwtape holds the position of Senior Tempter

Temptation

A temptation is an act that looks appealing to an individual. It is usually used to describe acts with negative connotations and as such, tends to lead a person to regret such actions, for various reasons: legal, social, psychological , health, economic, etc...

 and Undersecretary of his department. A subtle creature, he appears to understand very well the nature of human minds and weaknesses- although nothing about love.

He also has a way with words, and thinks little of Slubgob, a professor at Tempters' Training College for Young Devils, and is prone to sarcasm

Sarcasm

Sarcasm is “a sharp, bitter, or cutting expression or remark; a bitter jibe or taunt.” Though irony and understatement is usually the immediate context, most authorities distinguish sarcasm from irony; however, others argue that sarcasm may or often does involve irony or employs...

. His correspondence with his nephew

Nephew

Nephew is a son of one's sibling or sibling-in-law, and niece is a daughter of one's sibling or a sibling-in-law. Sons and daughters of siblings-in-law are also informally referred to as nephews and nieces respectively, even though there is no blood relation...

, the Junior Tempter Wormwood, concerning Wormwood's attempts to get an individual to sin

Sin

In religion, sin is the violation or deviation of an eternal divine law or standard. The term sin may also refer to the state of having committed such a violation. Christians believe the moral code of conduct is decreed by God In religion, sin (also called peccancy) is the violation or deviation...

is the content of Lewis' book.