σάρξ (sarx)

The Greek word sarx primarily denotes the soft tissue of a living body, covering bones and permeated with blood. In its most literal sense, it refers to the physical substance shared by humans and animals, as seen when Jesus shows his disciples his tangible body after resurrection, composed of flesh and bones (Luke 24:39). This concrete meaning extends to describe the whole human body or even a living creature in general, reflecting the Hebrew idiom "all flesh" found in passages like Acts 2:17.

Beyond its physical definition, sarx carries significant theological weight regarding human nature. It often stands in contrast to spirit (pneuma), highlighting the material aspect of existence that is subject to suffering and mortality. In Pauline letters, it frequently describes life lived under natural conditions or according to earthly lineage, such as when Paul speaks of his own physical body or his ancestry "according to the flesh" (Romans 9:3). This usage underscores human frailty and dependence, distinguishing the created order from divine influence.

A notable feature of this word is its capacity to symbolize both unity and limitation. It describes the profound bond between husband and wife becoming "one flesh" (Ephesians 5:31), while simultaneously marking the boundary of human capability apart from God. Translators must carefully navigate these nuances, as sarx can refer simply to biological life or to a state of existence oriented away from spiritual realities, depending on the context of the passage.