| Gill's Exposition of the Entire Bible Thou hast covered thyself with a cloud,.... With wrath and anger, as a cloud; he wrapped up himself in thick darkness, so as not to be seen or come at: sin, when it appears not pardoned, is as a cloud between God and his people; and this causes him to show his anger and displeasure; which is the cloud about him, Or the hiding of his face. The Targum is, "thou hast covered the heavens with the clouds of thy glory:'' that our prayer should not pass through; in such circumstances God seems to his people to be inexorable; and not a God hearing and answering prayer, as he is; as if there was no access unto him, or audience to be had of him, or acceptance of persons and prayers with him; whereas the throne of grace is always open and accessible: and there is a new and living way for believers always to approach unto God in; he is on a mercy seat, ready to receive and hear their prayers.
Geneva Study BibleThou hast covered thyself with a cloud, that our prayer should not pass through.
Jamieson-Fausset-Brown Bible Commentary44. (La 3:8). The "cloud" is our sins, and God's wrath because of them (Isa 44:22; 59:2).
Matthew Henry's Concise Commentary3:42-54 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. | 
