When Solomon finished praying, a bolt of lightning out of heaven struck the Whole-Burnt-Offering and sacrifices and the Glory of God filled The Temple.
The Glory was so dense that the priests couldn't get in - God so filled The Temple that there was no room for the priests!
When all Israel saw the fire fall from heaven and the Glory of God fill The Temple, they fell on their knees, bowed their heads, and worshiped, thanking God: Yes! God is good! His love never quits!