'Ready' in the Bible

Now if you are ready, when you hear the sound of the horn, flute, zither, trigon, harp, pipes, and all kinds of music, you must bow down and pay homage to the statue that I had made. If you don't pay homage to it, you will immediately be thrown into the midst of the furnace of blazing fire. Now, who is that god who can rescue you from my power?"

A river of fire was streaming forth and proceeding from his presence. Many thousands were ministering to him; Many tens of thousands stood ready to serve him. The court convened and the books were opened.