Introduction — Holiness
Holiness (kedushah) in the New Testament is not a mystical aspiration reserved for spiritual elites: it is fundamental halakhah, a direct command addressed to every baptized person. First Peter 1:15-16 cites Leviticus 19:2 — "Be holy, for I am holy" — transferring to the Christian community the theophanic norm of the Hebrew Bible. The Old Testament kedushah, which signified separation and consecration to God, brings its structure to fulfillment in the NT: every believer is called to participate actively in the divine nature. The rabbinic tradition teaches that one who sanctifies himself from below receives sanctification from above — a principle that 1 Thess 5:23 expresses in the apostolic prayer: "May God sanctify you completely."
| Dimension | Reference | Greek Term | Content |
|---|---|---|---|
| Absolute vocation | 1 Pet 1:15-16 | hagioi | Imitation of divine holiness |
| Ecclesial identity | 1 Pet 2:9 | ethnos hagion | Holy people by election |
| Normative will | 1 Thess 4:3 | hagiasmos | Sanctification as thélēma |
| Death to sin | Rom 6:11 | nekrous tē hamartia | Ontological rupture with the old man |
| New man | Eph 4:24 | kainos anthrōpos | Image of God restored |
| Eschatological vision | Heb 12:14 | diōkete | Holiness as condition for seeing God |
First Peter 1:15-16 is the foundational normative text: "As he who called you is holy, be holy yourselves in all your conduct." The term hagioi — holy ones — is not an honorific title but an ontological description of the baptized: those consecrated to God. The explicit citation of Lev 19:2 brings the Sinaitic norm to fulfillment: holiness is not the privilege of Israel but the universal vocation of every believer. First Peter 2:9 adds the communal dimension: "But you are a chosen generation, a royal priesthood, a holy nation" (ethnos hagion). The term hierateuma — priesthood — takes up Exod 19:6: the entire community is consecrated, not only ordained ministers. Cyril of Jerusalem, in his First Baptismal Catechesis, presents baptism as the moment in which God "fills with the heavenly gifts of the New Testament and confirms with the indelible seal of the Holy Spirit" — the baptized person is inaugurated into holiness sacramentally. First Peter 2:11 adds the ascetic dimension: "abstain from fleshly lusts, which war against the soul" — holiness entails an active discernment of interior dynamics.
First Thessalonians 4:3-7 provides the normative theological definition: "This is the will of God: that you be sanctified" (touto gar estin thélēma tou Theou, ho hagiasmos hymōn). The term thélēma — will — situates sanctification within the binding divine plan: not counsel but command. Paul specifies the concrete content: "each of you should know how to possess his own body in holiness and honor" (en hagiasō kaì timē). The body is not an obstacle to holiness but its privileged instrument. First Thessalonians 4:7 radicalizes: "God has called us not to impurity (akatharsia), but to sanctification (hagiasmos)." The purity/impurity opposition takes up the Old Testament halakhic categories with a new christological content: sanctification is oriented toward the coming of the Lord (1 Thess 5:23). The final apostolic prayer — "May God sanctify you completely" (holoteleis) — describes sanctification as a trinitarian work involving the entire being: spirit, soul, and body.
Romans 6:6-19 is the most articulate text on the ontological structure of sanctification. Paul begins from baptismal death: "our old man has been crucified with him" (synestaurōthē). The aorist passive verb indicates an event accomplished in baptism, but whose effect must be continually actualized. Romans 6:11 introduces the command that follows the event: "reckon yourselves dead to sin, but alive to God" (logizesthe heautous nekrous mèn tē hamartia, zōntas dè tō Theō). The verb logizomai — to reckon, calculate, consider — indicates a deliber