21. And who can now fail to understand that the holy prophet said for our instruction: “Every night will I wash my couch and water my bed with my tears”? Ps. vi. 6. For if you take it literally for his bed, he shows that such abundance of tears should be shed as to wash the bed and water it with tears, the couch of him who is praying, for weeping has to do with the present, rewards with the future, since it is said: “Blessed are ye that weep, for ye shall laugh;” S. Luke vi. 21. or if we take the word of the prophet as applied to our bodies, we must wash away the offences of the body with tears of penitence. For Solomon made himself a bed of wood from Lebanon, its pillars were of silver, its bottom of gold, its back strewn with gems. Cant. iii. 6. What is that bed but the fashion of our body? For by gems is set forth the splendour of the brightness of the air, fire is set forth by the gold, water by silver, and earth by wood, of which four elements the human body consists, in which our soul rests, if it do not exist deprived of rest by the roughness of hills or the damp ground, but raised on high, above vices, supported by the wood. For which reason David also says: “The Lord will send him help upon his bed of pain.” Ps. xli. [xl.] 3. For how can that be a bed of pain which cannot feel pain, and which has no feeling? But the body of pain is like the body of that death, of which it is said: “O wretched man that I am, who shall deliver me from the body of this death?” Rom. vii. 24.