Charles H. Spurgeon on Psalms 90:4

The Holy Ghost expresses himself according to the manner of men, to give us some notion of an infinite duration, by a resemblance suited to our capacity. If a thousand years be but as a day to the life of God, then as a year is to the life of man, so are three hundred and sixty-five thousand years to the life of God; and as seventy years are to the life of man, so are twenty-five millions five hundred and fifty thousand years to the life of God. Yet still, since there is no proportion between time and eternity, we must dart our thoughts beyond all these, for years and days measure only the duration of created things, and of those only that are material and corporeal, subject to the motion of the heavens, which makes days and years. —Stephen Charnock.