Adams on Psalm 6:6 & 7:14,15

6:6 I water my couch with my tears. Let us water our bed every night with our tears. Do not only blow upon it with intermissive blasts, for then like fire, it will resurge and flame the more. Sin is like a stinking candle newly put out, it is soon lighted again. It may receive a wound, but like a dog it will easily lick itself whole; a little forbearance multiplies it like Hydra's heads. Therefore, whatsoever aspersion the sin of the day has brought upon us, let the tears of the night wash away.

7: 14, 15 They have digged a pit for us - and that low, unto hell - and are fallen into it themselves. "No juster law can be devised or made, Than that sin's agents fall by their own trade." The order of hell proceeds with the same degrees; though it give a greater portion, yet still a just proportion, of torment. These wretched guests were too busy with the waters of sin; behold, now they are in the depth of a pit, "where no water is." Dives, that wasted so many tuns of wine, cannot now procure water, not a pot of water, not a handful of water, not a drop of water, to cool his tongue. Desideravit guttam, qui non dedit micam. (Augustine Hom. 7) A just recompense! He would not give a crumb; he shall not have a drop. Bread hath no smaller fragment than a crumb, water no less fraction than a drop. As he denied the least comfort to Lazarus living, so Lazarus shall not bring him the least comfort dead. Thus the pain for sin answers the pleasure of sin. . . . Thus damnable sins shall have semblable punishments; and as Augustine of the tongue, so we may say of any member. . . . If it will not serve God in action, it shall serve him in passion.

As quoted in Spurgeon's Treasury of David.