The phrase "the bed of suffering" refers to when a person lies in bed because he is sick. Alternate translation: "When he is sick and in bed, Yahweh will support him" (See: [[rc://en/ta/man/translate/figs-metonymy]])
The phrase "a bed of healing" refers to when a person rests in bed and recovers from his sickness. Alternate translation: "you, Yahweh, will heal him of his sickness" (See: [[rc://en/ta/man/translate/figs-metonymy]])