G2663, katápausis, is a Greek noun for rest, repose, or a place or state in which rest is entered. Eight of its nine New Testament occurrences are in Hebrews 3 and 4, and the remaining occurrence is in Acts 7:49. It does not name a bed, ordinary sleep, leisure, or relief from every earthly responsibility. Acts quotes Isaiah's question about the resting place human beings could build for the Creator, while Hebrews takes up Psalm 95's warning that the wilderness generation did not enter God's rest.
Hebrews develops the noun through a sustained argument rather than a detachable slogan. God's promise of entry still stands. Those who believe enter His rest, His works have been finished since creation, and the earlier generation's disobedience and unbelief warn the present community against hardening its heart. The same chapter tells readers to make every effort to enter that rest.
God's rest is therefore His promised gift and the goal of persevering faith, not spiritual passivity, self-salvation, or permission to neglect obedience and mutual exhortation. The chapter places creation rest, the wilderness warning, the promise addressed as Today, entry through faith, and the distinct Sabbath-rest language of Hebrews 4:9 within one theological movement.
G2663 participates in that argument, but the noun alone does not prove that Canaan, weekly Sabbath observance, present spiritual experience, or final consummation exhausts the whole meaning. Faithful teaching should preserve both promise and warning. It may invite weary people to trust God's completed work and encourage one another toward faithful perseverance, but it must not diagnose exhaustion, anxiety, disability, or difficulty feeling calm as unbelief.
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