There is something infinitely vast and glorious in the righteousness of God. When the deluge covered the earth, it covered the highest mountains. Looking down from above, not one mountain-top could be seen, but a vast world of waters - a vast plain reflecting the beams of the sun. So if you this day lie down under the righteousness of God, the mountains of your sins will not be seen, but only the vast, deep, glorious righteousness of your God and Savior. If you were to cast a stone into the deepest part of the ocean, it would be lost and swallowed up by the deep waves of ocean; so when a sinner is cast down under the righteousness of God, he is as it were lost and swallowed up in Christ.