Commentaries:
Barnes' Notes
Thou hidest thy face - As if God turned away from them; as if he was displeased with them; as if he withdrew from them the tokens of his friendship and favor.
They are troubled - They are confounded; they are overwhelmed with terror and amazement. The word "troubled" by no means conveys the sense of the original word - bâhal - which means properly to tremble; to be in trepidation; to be filled with terror; to be amazed; to be confounded. It is that kind of consternation which one has when all support and protection are withdrawn, and when inevitable ruin stares one in the face. So when God turns away, all their support is gone; all their resources "fail, and they must die." They are represented as conscious of this; or, this is what would occur if they were conscious.
Thou takest away their breath - Withdrawing that which thou gavest to them.
They die, and return to their dust - Life ends when thou dost leave them, and they return again to earth. So it is also with man. When God withdraws from him, nothing remains for him "but to die."
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