'Opened' in the Bible

“A river of fire was flowingAnd coming out from before Him;Thousands upon thousands were attending Him,And myriads upon myriads were standing before Him;The court sat,And the books were opened.

And behold, one who resembled a human being was touching my lips; then I opened my mouth and spoke and said to him who was standing before me, “O my lord, as a result of the vision anguish has come upon me, and I have retained no strength.