The Greek verb kopazō means to cease, stop, abate, or grow weary enough to pause. It is used for the stilling of storms and appears in the significant Gospel miracle accounts.
Kopazō is the word used when 'the wind died down' (ekopasen) after Jesus rebuked the storm (Matthew 14:32; Mark 4:39; 6:51). The calming of the storm with a word — 'Quiet! Be still!' — and the immediate cessation of the wind is one of the New Testament's most direct demonstrations of Jesus' divine authority over creation. The disciples' response reveals the appropriate reaction to such power: They were terrified and asked each other, Who is this? Even the wind and the waves obey him! (Mark 4:41). The Creator who originally established order over chaos (Genesis 1) is the same One whose voice causes the storm to kopazo. Creation recognizes its Lord's voice.