Psalms 74:9

Signs — Those tokens of God's gracious presence, which we used to enjoy. The temple and ark, and sacrifices, and solemn feasts, were signs between God and his people. Prophet — Who can foretell things to come. Probably Ezekiel and Jeremiah were dead when this psalm was composed; and David was involved in civil affairs, and did not teach the people as a prophet. Knoweth — How long their captivity should continue.