μηδείς

Mēdeís is a powerful Greek negative, combining the simple negative particle mē with the indefinite pronoun heis ("one"). Unlike simple negation (ou), mēdeís conveys a strong, emphatic denial or prohibition, indicating "not even one" or "absolutely nothing." It is frequently used in commands or injunctions, highlighting the complete absence of something or the absolute prohibition against an action.

In the New Testament, mēdeís often appears in contexts where Jesus or the apostles instruct disciples on behavior, belief, or secrecy. It underscores the totality of what is forbidden or absent, such as telling no one about a miracle, having no man deceive himself, or doing nothing through strife. This absolute quality gives the word significant theological weight, demanding complete obedience or acknowledging a total lack.

Its usage can extend to both persons and things. For example, it can mean "no one" (Mark 8:30) or "nothing" (Philippians 2:3). The semantic range of mēdeís is thus narrow but forceful, always pointing to a complete denial or non-existence, rather than a partial or conditional one. It contrasts with indefinite pronouns expressing "some" or "any," serving to completely negate such possibilities. The impact of mēdeís is to leave no room for exceptions or partial fulfillment in the statement it modifies.