The Hebrew verb nuach means to rest, settle, be still, or come to a resting place. Occurring about 65 times in the OT, it is the root of the name Noah (H5146 — 'rest') and the noun menuha (rest, repose). It describes the settling of the Spirit, the ark landing, and the promised Sabbath rest.
Nuach is the verb behind God's promise of rest to His people. The Spirit of the LORD rests (nuach) on the Messiah (Isaiah 11:2). God promised Israel rest in the land. Hebrews 4 argues that this promised rest remains for God's people — ultimately fulfilled in Christ, who gives rest to the weary (Matthew 11:28–29). The creation narrative's seventh day rest (Genesis 2:2) uses a different word, but nuach fills out the theology of divine peace and settled presence.