The glory of man, as the bible puts it is bound to fall and is bound to end.
When the bible speaks here, it talks about people who have depended on their glory and have lived for it solely.
This is why the bible compares it to the the word of God which was shared with us that does lasts for ever and ever.
For your glory, your name, your power, your achievements remain here but the word of God goes beyond the grave.
The bible says that you whither and the glory falls off. But the word of God is forever.
So what fo you glory in more? Is it the word of God or your own glory??