When the glory of God was revealed to the nation of Israel it appeared in various forms. In Exodus 16:10 it appeared as a cloud, in Exodus 24:17 and Leviticus 9:23 it was a fire, and on the Day of Atonement it appeared above the Mercy Seat in the Most Holy Place as a cloud which is thought to have been shining brightly.
In Isaiah 60:1-4 it says that the glory of the LORD will be on the nation of Israel. This is at the time when they are restored, they turn to God, and are blessed by him. Probably this is the time spoken of in Isaiah 2:1-4 when Jesus Christ has returned to the earth and reigns as King from Jerusalem.
At the birth of Jesus Christ we are told the glory of the Lord shone around the shepherds (Luke 2:9) and at the transfiguration of Jesus Moses and Elijah appeared in glory and spoke with him. Presumably in these cases it involved a brightly shining light.
In 2 Thessalonians 2:15, Paul says to believers: “To this he called you through our gospel, so that you may obtain the glory of our Lord Jesus Christ.”
So, the glory of God is on people when they follow the way of life that Jesus has shown to those who wish to find salvation from eternal death.