Isaiah 2:9

for everyone has sinned and falls short of God's glory [i.e., His approval, or His perfect character].

And the kings of the earth, the princes, the military commanders, the rich people, the influential people and every slave and free man hid themselves in the caves and among mountain ledges.

Do not allow anyone, who delights in acting humble [i.e., living an ascetic life] and who worships angels, to rob you of your reward [in heaven]. [Note: This "angel worship" could mean holding angels in high regard because of their role as God's messengers, or the claim that God can be approached only through angelic intermediaries]. He places great importance on what he [claims to] see [i.e., visions], being inflated with pride by his fleshly mind for no [good] reason.

But the person who speaks against the Holy Spirit can never be forgiven, for he is guilty of a never ending sin."