Blasphemy
In the UPDV, blasphemy is speech that injures Yahweh's name, character, or honor — and the term widens by association to take in profane swearing, cursing of human beings, reviling of leaders, and the cursing of parents. Law fixes the death penalty for it; narrative records it as the typical sin of foreign kings, mocking crowds, and apostates; wisdom warns against the foul mouth as a self-destroying instrument; the Gospels make it the legal pretext for putting Jesus to death; and Revelation gives blasphemy a face — a beast with a "name of blasphemy" written on its heads. The umbrella collected here also includes the apostolic prohibition of cursing-and-blessing from one mouth and the eschatological refusal of the wicked to repent of their blasphemies.
The Name and the Statute
The Decalogue's third word forbids hollow use of the divine name: "You will not take the name of Yahweh your God in vain; for Yahweh will not hold innocent anyone who takes his name in vain" (Ex 20:7), repeated in Deuteronomy with the speech-formula intact — "You will not take the name of [the Speech of] Yahweh your God in vain" (Deut 5:11). The Holiness Code presses further. False oaths in Yahweh's name are themselves a profanation: "And you⁺ will not swear by my name falsely, and [thus] you profane the name of your God: I am Yahweh" (Lev 19:12). The corresponding positive command makes the Name itself a kind of public liturgy that Israel must not desecrate: "And you⁺ will not profane my holy name; but I will be hallowed among the sons of Israel: I am Yahweh who hallows you⁺" (Lev 22:32).
The case-law of blasphemy is fixed by Leviticus 24, which is at once the foundational narrative and the legal precedent. The half-Egyptian son of Shelomith, in a fight with an Israelite, "blasphemed the name, and cursed; and they brought him to Moses" (Lev 24:11). They put him in custody until Yahweh's verdict comes back: bring him outside the camp, the hearers lay their hands on his head, and the whole congregation stones him. The general statute follows: "And he who blasphemes the name of [the Speech of] Yahweh, he will surely be put to death; all the congregation will certainly stone him: the foreigner as well as the home-born, when he blasphemes the Name, will be put to death" (Lev 24:16). The same penalty is attached, in the same body of law, to cursing one's father or mother — "he who curses his father or his mother, will surely be put to death" (Ex 21:17), "For any man who curses his father or his mother will surely be put to death: he has cursed his father or his mother; his blood will be on him" (Lev 20:9). Proverbs preserves the warning in wisdom form: "Whoever curses his father or his mother, His lamp will be put out in the middle of the night" (Prov 20:20); and it diagnoses the generation that does it as one that "do not bless their mother" (Prov 30:11). Jesus appeals to the same Mosaic statute when correcting the Korban dodge: "For Moses said, Honor your father and your mother; and, He who speaks evil of father or mother, let him die the death" (Mark 7:10).
Blasphemy as the Foreign King's Sin
In the historical books, blasphemy is the typical sin of the imperial enemy who taunts Yahweh. The Philistine champion Goliath "cursed David by his gods" (1 Sam 17:43). Sennacherib's officers do the same to Hezekiah on a larger scale: "his slaves spoke yet more against Yahweh God, and against his slave Hezekiah" (2 Chr 32:16); and the Isaianic answer to it is direct — "Whom have you defied and blasphemed? And against whom have you exalted your voice and lifted up your eyes on high? [Even] against the Holy One of Israel" (2 Kings 19:22). Sirach picks up the same Sennacherib-Rabshakeh episode as a stock example of blasphemy answered by judgment: "In his days Sennacherib came up, And sent Rabshakeh, Who stretched forth his hand against Zion, And blasphemed God in his pride" (Sir 48:18). The Maccabean generation reads its own crisis through that grid. Mattathias "saw the blasphemies that were done in Judah, and in Jerusalem" (1 Macc 2:6). Judas in battle echoes Hezekiah: "Be avenged of this man, and his army, and let them fall by the sword: remember their blasphemies, and do not give them a dwelling place" (1 Macc 7:38). And the corporate prayer of the priests appeals to the Sennacherib precedent itself: "O Lord, when those who were sent by King Sennacherib blasphemed you, an angel went out, and slew of them a hundred and eighty-five thousand" (1 Macc 7:41). Isaiah turns the same charge inward against Israel's syncretists, who have "burned incense on the mountains, and blasphemed me on the hills; therefore I will first measure their work into their bosom" (Isa 65:7).
Cursing as Personal Malice
A second strand is the use of curse and reviling against human beings. David, fleeing Absalom, is cursed by Shimei from the family of Saul: "he came out, and cursed still as he came. And he cast stones at David, and at all the slaves of King David... And thus said Shimei when he cursed, Begone, begone, you man of blood, and base fellow" (2 Sam 16:5-8). The Psalter catalogs this kind of mouth as a moral type: "His mouth is full of cursing and deceit and oppression: Under his tongue is mischief and iniquity" (Ps 10:7); "[For] the sin of their mouth, [and] the words of their lips, Let them even be taken in their pride, And for cursing and lying which they speak" (Ps 59:12); and the imprecation of Psalm 109 makes the curser eat his own dish — "he loved cursing, and it came to him; And he did not delight in blessing, and it was far from him" (Ps 109:17). Ecclesiastes adds the self-implicating note that almost no mouth is clean: "for oftentimes also your own heart knows that you yourself likewise have cursed others" (Eccl 7:22). And the same book counsels political prudence — "Don't revile the king, no, not in your thought; and don't revile the rich in your bedchamber: for a bird of the heavens will carry the voice, and that which has wings will tell the matter" (Eccl 10:20).
Sirach on Foul Speech
Sirach extends the wisdom-tradition treatment with unusual specificity. Cursing is reflexive — it lands on the curser: "When the ungodly curses his adversary He curses his own soul" (Sir 21:27). It can be aimed surgically at the genuinely destructive mouth: "Curse the whisperer and the double-tongued, For he has destroyed many who were at peace" (Sir 28:13). Vulgar speech is forbidden by habit — "Do not accustom your mouth to vulgar speech, For there is a sinful thing in that" (Sir 23:13). The reckless oath is physically repulsive: "The oath of the godless makes the hair stand on end, And their strife [makes] a man plug his ears" (Sir 27:14). And the moral incoherence of cursing while another prays beside you is set as a question Yahweh himself will answer: "One praying, and another cursing, To whose voice will the Master listen?" (Sir 34:29).
Job's Wife and the Limit-Case
The book of Job gives the limit-case in a single line. With Job in ashes, his wife says, "Do you still hold fast your integrity? Renounce God, and die" (Job 2:9). The narrative places the suggestion to blaspheme at the boundary where suffering pushes a believer; Job's refusal is what the rest of the book is about. The same boundary surfaces in the Davidic narrative when the prophet rebukes David's adultery: "because by this deed you have shown utter contempt for Yahweh, the son also who is born to you will surely die" (2 Sam 12:14). The wording is the UPDV's de-euphemized rendering — David's act has given the enemies an occasion to scorn the Name.
False Indictments for Blasphemy
The same statute that punishes real blasphemy is repeatedly turned into a tool of judicial murder. Jezebel uses it against Naboth: "the base fellows bore witness against him, even against Naboth, in the presence of the people, saying, Naboth cursed God and the king. Then they carried him forth out of the city, and stoned him to death with stones" (1 Kings 21:13). The Synoptics show the scribes thinking it about Jesus the moment he forgives the paralytic — "Why does this man thus speak? He blasphemes. Who can forgive sins but one, God?" (Mark 2:7); "Who is this that speaks blasphemies? Who can forgive sins, but God alone?" (Lu 5:21). At the night trial Caiaphas pronounces the verdict in the technical category: "You⁺ have heard the blasphemy: what do you⁺ think? And they all condemned him to be worthy of death" (Mark 14:64). Luke's version pushes the case to the same point without the word: "And they all said, Are you then the Son of God? And he said to them, You⁺ say that I am. And they said, What further need do we have of witness? For we ourselves have heard from his own mouth" (Lu 22:70-71). The Markan witnesses garble Jesus' temple-saying — "We heard him say, I will destroy this temple that is made with hands, and in three days I will build another made without hands" (Mark 14:58) — to manufacture the charge. And the Johannine answer to Pilate finally states the legal theory plainly: "We have a law, and by that law he ought to die, because he made himself the Son of God" (John 19:7). Around the trial, the soldiers and crowd themselves drift into actual blasphemy: at the night arrest Peter "began to curse, and to swear, I don't know this man of whom you⁺ speak" (Mark 14:71), and on the road to the cross "many other things they spoke against him, reviling him" (Lu 22:65).
Blasphemy of the Holy Spirit
In the controversy stories the Synoptics name a particular blasphemy as unforgivable. The crowd attributes Jesus' exorcisms to Beelzebul — "By Beelzebul the prince of the demons he casts out demons" (Lu 11:15) — and Mark explains the saying about the Holy Spirit by appending the reason: "because they said, He has an unclean spirit" (Mark 3:30). The principle that follows is stated by Mark and Luke in parallel: "whoever will blaspheme against the Holy Spirit never has forgiveness, but is guilty of an eternal sin" (Mark 3:29); "everyone who will speak a word against the Son of Man, it will be forgiven him: but to him who blasphemes against the Holy Spirit it will not be forgiven" (Lu 12:10). Hebrews carries the same logic into the apostate's case in covenant terms: such a person "has trodden under foot the Son of God, and has counted the blood of the covenant with which he was sanctified a common thing, and has done despite to the Spirit of grace" (Heb 10:29).
The Apostolic Prohibition
Paul lists cursing among the tongue-sins by which Romans-style depravity is recognised: "Whose mouth is full of cursing and bitterness" (Rom 3:14). His positive counter-instruction is to refuse the response in kind: "Bless those who persecute you⁺; bless, and do not curse" (Rom 12:14) — Jesus' wording from the Sermon on the Plain ("bless those who curse you⁺, pray for those who despitefully use you⁺," Lu 6:28) restated. The vice list to the Colossians puts blasphemous speech in the household-rules register: "but now do you⁺ also put them all away: anger, wrath, malice, railing, shameful speaking out of your⁺ mouth" (Col 3:8). Paul also speaks in the first person about a past sin he calls by the technical word: "though I was before a blasphemer, and a persecutor, and injurious: nevertheless I obtained mercy, because I did it ignorantly in unbelief" (1 Tim 1:13). Apostolic discipline can be applied to those who persist: "of whom is Hymenaeus and Alexander; whom I delivered to Satan, that they might be taught not to blaspheme" (1 Tim 1:20). And there is the pastoral sting that the rich oppressors are themselves the blasphemers: "Don't they blaspheme the honorable name by which you⁺ are called?" (Jas 2:7).
James presses the incoherence of mixed speech more fully than anywhere else in the New Testament: "With it we bless the Lord and Father; and with it we curse men, who are made after the likeness of God: out of the same mouth comes forth blessing and cursing. My brothers, these things ought not to be so" (Jas 3:9-10). The same letter forbids the swearing-oath outright: "But above all things, my brothers, don't swear, neither by the heaven, nor by the earth, nor by any other oath: but let your⁺ yes be yes, and your⁺ no, no; that you⁺ may not fall under judgment" (Jas 5:12).
Eschatological Blasphemy
A final movement gathers the texts in which blasphemy becomes the end-time signature. Daniel's fourth-kingdom horn is identified by his speech: "he will speak words against the Most High, and will wear out the saints of the Most High; and he will think to change the times and the law" (Dan 7:25). Paul's "man of lawlessness" continues the same line: he "opposes and exalts himself against all that is called God or that is worshiped; so that he sits in the temple of God, setting himself forth as God" (2 Thess 2:3-4). Revelation's beast is the figure to whom blasphemy is essential: "And I saw a beast coming up out of the sea, having ten horns and seven heads, and on his horns ten diadems, and on his heads a name of blasphemy" (Rev 13:1). At Smyrna John names the synagogue-opposition by the same word: "I know your tribulation, and your poverty (but you are rich), and the blasphemy of those who say they are Jews, and they are not, but are a synagogue of Satan" (Rev 2:9). And under the bowl-judgments the wicked do exactly what the wilderness generation did when bitten by serpents — they speak against [the Speech of] God (cf. Num 21:5-6) — only now without the option of repentance: "they blasphemed the God of heaven because of their pains and their sores; and they did not repent of their works" (Rev 16:11). The story that began with one half-Egyptian boy stoned outside the camp ends with a global, unrepentant chorus blaspheming the Name to the last.