Psalms 6:6 - Matthew Poole's English Annotations on the Holy Bible

All the night; he mentions this time, by way of aggravation of his misery, because that season, which is to others by God's appointment a time of rest, was to him very sad and doleful, whether from his disease, which then came upon him more strongly, as it is usual; or from the opportunity which the solitude or silence of the night gave him to think of his own sins, or his enemies perfidiousness and malice, or God's displeasure, or his future estate. Make I my bed to swim, to wit, with tears. See the like hyperbole Jeremiah 9:1 Lamentations 3:48,49. I water my couch; or, my bedstead.