They have cut off my life in the dungeon - Or, “They destroyed my life in the pit,” i. e. tried to destroy it by casting me into the cistern, and covering the month with a stone. See the margin reference.
Matthew Henry
Concise Bible Commentary
The more the prophet looked on the desolations, the more he was grieved. Here is one word of comfort. While they continued weeping, they continued waiting; and neither did nor would expect relief and succour from any but the Lord.