Was it an accident this first time? Would it ever occur again? You watched it: just the same process and at the same time, and you began to feel--it is a wheel! with its regulated, measured appointed movement; steady, by rule it rises to a certain point, and then comes down to a certain point, then turns again and comes up. It is a perfectly balanced wheel, making its revolution steadily, steadily. I did not fix those revolutions: the great Architect did! He knows how many the wheel itself can perform; He knows what each revolution marks off and what it accomplishes, and He knows too how many shall measure off my thread of life. I do not know the number, you do not know; but this we do know, it is marked upon the dial, and we are tolerably sure it is not more than threescore and ten. Suppose you saw the dial of life before your eye as plain as that dial is and the hand pointing twenty, thirty, forty, fifty of the divisions gone--gone never to return! Suppose you felt that that hand was pressing forward and would point and point to successive lines till at last, without a moment's warning, the hour will strike and it is over, no recall! Man of twenty, proud of thy youth! man of fifty, proud of thy maturity! man of seventy, proud of thy years! are you prepared to meet your God? Has your time been spent with a view to eternity? Has the measure of your days been taken? Has the course of your years been run in holiness? If not, by the deep voice of the heavens above thee; that voice which evermore is speaking; by the night and the day, and the season and the year, I charge thee prepare to meet thy God. For thy time is passing and eternity at hand.