Kavod is the Hebrew word for glory, and its root meaning is weight or heaviness. The glory of God is his weightiness — the sheer substance and significance of his presence, so real it can fill a space and stop the priests in their tracks. When the kavod of the LORD filled the tabernacle and the temple, it appeared as a blazing cloud, too heavy with holiness to stand in.
The heavens declare the glory of God, and the whole earth is meant to be full of his kavod. In the New Testament this weighty glory takes on flesh: we beheld his glory, John writes of Jesus, the glory as of the only begotten of the Father. And astonishingly, Paul says the light afflictions of this life are working for us a far more exceeding and eternal weight of glory — the kavod that awaits God's people.
Kavod in Scripture
The heavens declare the glory of God; and the firmament sheweth his handywork.