Isaiah 14:12 NIV
How you have fallen from heaven, morning star, son of the dawn! You have been cast down to the earth, you who once laid low the nations!
Some consider this as referring to the fall of satan, others to the tragic destruction of the king of Babylon. More importantly, it signifies how God Almighty deals with the arrogant and haughty. Though they may seem to flourish for a while, their destruction is imminent and they are brought low.
Regarding the proud, what we read in the book of Job is very apt....
Job 20:6-9 NIV
Though the pride of the godless person reaches to the heavens and his head touches the clouds, he will perish forever, like his own dung; those who have seen him will say, ‘Where is he?’ Like a dream he flies away, no more to be found, banished like a vision of the night. The eye that saw him will not see him again; his place will look on him no more.
But God looks on the humble with favor and exalts them in due time. He is good and what he does is good and righteous. Blessed be his holy name.