Our fathers had much to say about stillness, and by stillness they meant the absence of motion or the absence of noise or both.
They felt that they must be still for at least a part of the day, or that day would be wasted. God can be known in the tumult of the world if His providence has for the time placed us there, but He is known best in the silence. So they held, and so the sacred Scriptures declare. Inward assurance comes out of the stillness. We must be still to know.
A.W. Tozer, God Tells the Man Who Cares (Camp Hill PA: WingSpread Publishers, 1993), p. 10.