verse 3 goes with verse 4
Obad 1:3-4
3 The pride of thine heart hath deceived thee, thou that dwellest in the clefts of the rock, whose habitation is high; that saith in his heart, Who shall bring me down to the ground?
4 Though thou exalt thyself as the eagle, and though thou set thy nest among the stars, thence will I bring thee down, saith the LORD.
(KJV)
the old testament is full of saying like this
Jer 51:53
53 Though Babylon should mount up to heaven, and though she should fortify the height of her strength, yet from me shall spoilers come unto her, saith the LORD.
(KJV)
especialy of lucifer
Isa 14:12-15
12 How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!
13 For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God: I will sit also upon the mount of the congregation, in the sides of the north:
14 I will ascend above the heights of the clouds; I will be like the most High.
15 Yet thou shalt be brought down to hell, to the sides of the pit.
(KJV)
You will find that God hates pride very much. He will "always" humble the proud. There will come a time that everyone will kneel and confess that Jesus Christ is Lord.