'Sound' in the Bible

When you hear the sound of marching in the tops of the trees, act decisively. For at that moment the Lord is going before you to strike down the army of the Philistines."

Then Absalom sent spies through all the tribes of Israel who said, "When you hear the sound of the horn, you may assume that Absalom rules in Hebron."

Hushai replied to Absalom, "Ahithophel's advice is not sound this time."

Then Absalom and all the men of Israel said, "The advice of Hushai the Arkite sounds better than the advice of Ahithophel." Now the Lord had decided to frustrate the sound advice of Ahithophel, so that the Lord could bring disaster on Absalom.