What Is Satan in the Bible? From the Accuser in the Book of Job to the Proper Name

Satan, in the Bible, is not born as a proper name: he is born as an office. The Hebrew term śāṭān means “accuser” or “adversary” and, in the oldest texts, always comes with the article, haśśāṭān, “the accuser”—it designates a function within the heavenly council, not the biography of an individual. Only later does this word become fixed as a name.

The passage from function to proper name is documented and even datable in one text. The Episcopal Pastoral Commission for the Doctrine of the Faith, of the National Conference of the Bishops of Brazil, in the document “Exorcismos: reflexões teológicas e orientações pastorais”, sums up the path thus: “Originally, the expression used was ‘the satan’, with the article ‘the’, designating not a name but an office: ‘the accuser’. Only gradually did this word come to be used as a proper name, without the article. The first text with this usage is 1 Chr 21:1”. This article follows that path with the works in the Locus library, from the Hebrew legal vocabulary to the book of Revelation.

What Does the Word Satan Mean in the Hebrew Bible?

The starting point is the vocabulary of the courtroom. The study “Satã no horizonte veterotestamentário e judaico”, in the Locus library, situates the term in the semantic field of the verb to oppose and to accuse, and records a clearly forensic use in the Psalter: “Appoint a wicked man against him, and let an accuser (śāṭān) stand at his right hand” (Ps 109:6). The accuser is here a procedural role, the one who stands at the right of the defendant in order to incriminate him.

Hence the more exact formulation that the same study proposes: “in the Old Testament, Satan is a mere function, not a biography”. The observation is decisive for anyone who looks in the Old Testament for a history of the devil. It is not there with the traits that later imagination gave it.

Who Was Satan in the Book of Job?

In the book of Job, haśśāṭān appears within the heavenly council, questioning the righteousness of the just man and asking permission to put him to the test (Job 1:6-12 and 2:1-7). The study “Satã no horizonte veterotestamentário e judaico” insists on the limit: he is an authorized and limited accuser, who acts only within clear permissions (Job 1:12 and 2:6). The same pattern, the text notes, reappears in Zechariah, where haśśāṭān accuses the high priest Joshua and the Lord rebukes him (Zech 3:1-2).

The CNBB describes the logic of the character in Job in the same terms—the accuser does not believe that the human being, in the face of misfortune, is capable of recognizing the greatness of God, and for this reason God permits the trial. The liturgical commentary “DIOS CADA DÍA”, by Marcel Bastin, Ghislain Pinckers, and Michel Teheux, reads the book as a trial with three characters: “Dios; ‘Satanás’, el Acusador, el que siembra la división entre Dios y el hombre diciéndole a Dios: ‘¡Los hombres te olvidarán!’, y al hombre: ‘¡Dios te ha olvidado!’, y Job, que, sin sospecharlo, va a ser arbitro en el debate”—that is, God; the Accuser, who sows division between God and man by saying to God “men will forget you” and to man “God has forgotten you”; and Job, who without suspecting it will be the arbiter of the debate.

When Does Satan Become a Proper Name?

The turning point, according to the CNBB, occurs in 1 Chr 21:1, the first text in which the word is used without the article, as a name. The same document also refers to the Book of Wisdom, which associates the entry of death into the world with the envy of the devil (Wis 2:24). It is in this arc—Job, Zechariah, Chronicles, Wisdom—that a function of accusation gradually becomes a recognizable figure.

Did Satan in the Old Testament Come from Persia? Where the Sources Diverge

Here the works in the library do not say the same thing, and the divergence deserves to be pointed out rather than harmonized. The National Conference of the Bishops of Brazil admits a hypothesis of external influence: the idea of satan as a personal enemy of God would have been “possibly influenced by conceptions of the surrounding peoples, from the Babylonians to the Persians and Greek religion”, with particular emphasis on Zoroastrianism from the year 500 B.C.

The study “Satã no horizonte veterotestamentário e judaico” explains the same phenomenon by an internal route: the function gradually stabilizes into a more personalized figure above all in the literature of the Second Temple. The two readings are not necessarily exclusive, but the reader should know that the first is presented as a hypothesis (“possibly”, “may have been”) and the second as the description of a documented literary process. The methodological rule that the same study formulates holds for both: do not automatically read the Satan of the Christian imagination into the ancient texts.

What Does Jesus Say About Satan in the Gospels?

In the New Testament the name is already fixed, and it is Jesus who supplies the decisive argument. In Mk 3:20-35, accused of casting out demons by the prince of demons, He answers with a question that the commentary “Lectio divina para a vida diária: o evangelho de Marcos”, by Giorgio Zevini and Pier Giordano Cabra, cites thus: “¿Cómo puede Satanás expulsar a Satanás?”, that is, “how can Satan cast out Satan?”. There follows the principle of the kingdom divided against itself, which cannot stand.

The study “Demonologia na Parábola do Semeador”, also from the library, adds a piece of Jewish background: the figure of the birds that devour the seed (Mk 4:4) has an echo in the Book of Jubilees, where Mastema, the accuser or adversary, acts by means of birds that devastate the sown fields (Jub 11:10-24). The action attributed to Satan in Mk 4:15 is, in this horizon, that of snatching away the Word before it takes root.

How Does the Bible Narrate the Fall of Satan?

Two texts bring the question into focus. Anne Bernet, in “In the Company of Angels: The True Story of God’s Messengers” (1998), cites them side by side: the word of Jesus in Lk 10:18, “I saw Satan fall from Heaven like lightning”, and Revelation, “That great dragon was cast down, that ancient serpent, who is called the Devil and Satan, who seduces the whole world; he was cast down to the earth, and his angels were cast down with him” (Rev 12:9). The same author refers the Scholastic discussion to the Summa Theologiae of Saint Thomas Aquinas, I, q. 109, a. 4.

A frequent misunderstanding should be cleared up here: the name lucifer does not appear in these texts. The CNBB explains that it took hold because of Saint Jerome’s commentaries on the book of Isaiah and his Vulgate translation, from Is 14:12, and that the Latin term means “light-bearer”. The same document concludes that “devils and demons do not appear in the biblical texts in an identical and univocal way”. On the fate of those who fell, see also the fallen angels and the synthesis of the Catechism on angels and demons.

Does Satan Exist? The Modern Objection and the Answer of the Sources

The question is not new. Marcelo Gomes Bolshaw, in “Problemática do tema anjos e demônios hoje” (2018), recalls that authors such as Friedrich Schleiermacher and Adolf von Harnack rejected the idea of Satan as a personal being, attributing it to ancient cultural influences. And he cites the letter in which von Harnack admits it with clarity: “As for your question about the devil, there is no doubt that the Scriptures intend to speak of a personal devil. But must the Bible have the last word, is it infallible? You know that this is not my opinion” (A. von Zahn-A. Harnack, A. Harnack, Berlin, 1951, pp. 211-212).

The remark is instructive: even one who denies the personal existence of the adversary recognizes that the biblical text speaks of him as a person. The conclusion Bolshaw draws is one of method—“it is necessary to return to the biblical texts with a correct exegesis and to study how the Christian tradition, both Catholic and Protestant, interpreted them over the centuries”. It is exactly what distinguishes theological reading from curiosity: it is not a matter of deciding whether the figure is appealing, but of reading what is written and how it has been read.

One last clarification, because the questions are frequently confused. To know what Satan is in the Bible is not the same as knowing how the adversary acts upon a particular person. On that, see the difference between demonic possession and obsession, and on the angelic world in which the accuser is situated, the hierarchy of the angels according to the Bible.

Frequently Asked Questions

What does the word satan mean?

It means accuser or adversary. The Hebrew term śāṭān has a forensic sense, of one who accuses in a court, and in the oldest texts it appears with the article, haśśāṭān, “the accuser”, designating a function and not a name.

What is the origin of the word satan in the Bible?

The origin is the legal vocabulary of the Old Testament. Ps 109:6 uses śāṭān for the accuser who stands at the right of the defendant. According to the National Conference of the Bishops of Brazil, only gradually did the word come to be used as a proper name, without the article, and the first text with this usage is 1 Chr 21:1.

Does Satan appear in the Old Testament?

He does, but almost always as a function within the heavenly council. He is in Job 1:6-12 and 2:1-7, in Zech 3:1-2, where he accuses the high priest Joshua, and in Ps 109:6. In Job, he acts only within the permissions he receives (Job 1:12 and 2:6).

How does the Bible narrate the fall of Satan?

Lk 10:18 gives the word of Jesus, “I saw Satan fall from Heaven like lightning”, and Rev 12:9 speaks of the dragon cast down with his angels. The name lucifer does not come from these texts, but from Saint Jerome’s translation of Is 14:12, as the CNBB document on exorcisms recalls.

Does Satan exist in the Bible or is he a cultural figure?

Scripture speaks of a personal adversary. Theologians such as Schleiermacher and von Harnack rejected this reading, attributing it to ancient cultural influences, and von Harnack himself acknowledged in a letter that “the Scriptures intend to speak of a personal devil”, although he denied their infallibility.