In particular, it's crazy how much authority Christ has over demons, so much so that the Pharisees accuse him of being in league with Beelzebub (Mark 3:22-30). Demons beg Him to have mercy on them, but he doesn't show mercy! (Mark 5:7) Are the demons any less deserving of salvation than men? Certainly not, we've both sinned against a holy God, and earned the wages of death, but God has decided to save only one group (and even then, a subset). That's election!
But that's another topic. Here's what I wanted to post about today: Isn't it cool how the demon's response in Mark 5 seems to be a (partial?) fulfillment of Isaiah 45:23?
By myself I have sworn;Mark 5
from my mouth has gone out in righteousness
a word that shall not return:
‘To me every knee shall bow,
every tongue shall swear allegiance.’
5:1 They came to the other side of the sea, to the country of the Gerasenes.  2 And when Jesus  had stepped out of the boat, immediately there met him out of the tombs a man with an unclean spirit. 3 He lived among the tombs. And no one could bind him anymore, not even with a chain, 4 for he had often been bound with shackles and chains, but he wrenched the chains apart, and he broke the shackles in pieces. No one had the strength to subdue him. 5 Night and day among the tombs and on the mountains he was always crying out and cutting himself with stones. 6 And when he saw Jesus from afar, he ran and fell down before him. 7 And crying out with a loud voice, he said, “What have you to do with me, Jesus, Son of the Most High God? I adjure you by God, do not torment me.”Every knee will bow, and every tongue will confess. Some will do so unwillingly in rebellion, but it will happen when Christ comes again, and has begun to happen with Christ's inauguration of his kingdom on earth with his earthly ministry.
Kiss the Son, lest he be angry, and you perish in the way,May we always be mindful of the time to come! Cherish Christ today and not fear facing Him tomorrow! Blessed are all who take refuge in Him.
for his wrath is quickly kindled.
Blessed are all who take refuge in him.