What does 2 Chronicles 6:13 mean?

Solomon had a bronze platform built and set it in the middle of the courtyard. It was about seven and a half feet square and four and a half feet high. He stood up on it, then knelt down in front of everyone, spread out his hands toward the sky, and started to pray. 2 Chronicles 6:13 - Modern Text Bible

(Solomon publicly humbles himself before the whole assembly, showing that even a king needs to kneel before God. The platform makes his actions visible to everyone.)