Leviathan lives too

Ever heard of "Leviathan"?  Who or what is/are the Leviathan but a beast of enormous size and strength, most probably unstoppable; as described in the Bible, both New and Old Testament.  

Does Leviathan live, whether figuratively or in actuality?  In the later, the seas house this creature (as before), but in the former, the spirit of this alleged creature goes everywhere, anywhere, where power and might--for the worse rather than better--roams the earth as a spirit(s), creating chaos and corruption among and within mankind.  

"Where the glory of God is," so too will Leviathan live, aiming to undo what God does, the grace and redemption of the Father through his son, Jesus.  Yes, Leviathan lives and roams about--just as in the days of Job (the person and oldest book of the Old Testament). 

Can Leviathan be conquered or is it eternal, indomitable? Considering that the glory of God invokes Leviathan, it hardly seems possible since, if any might slew the beast, it would be God, right? 

As it is, we still must serve someone or body and thus the question is, given that Leviathan lives, is "Whom do I serve?"  Do I/you serve God as a true servant or do we instead give room for Leviathan to enter, rendering confusion to our otherwise openness and obedience to God.  

Beware and be weary of the spirit of Leviathan, who is crafty and cutting, severing relationships with the twist of truths among other deception, disruption and destruction since the beginning to new and until....  Leviathan is always aimed to destroy with boundless power, not physical or natural but supernatural, evil in all element.   From Revelation 12:1-7, 

And a great sign appeared in heaven: a woman clothed with the sun, with the moon under her feet, and on her head a crown of twelve stars. She was pregnant and was crying out in birth pains and the agony of giving birth. And another sign appeared in heaven: behold, a great red dragon, with seven heads and ten horns, and on his heads seven diadems. His tail swept down a third of the stars of heaven and cast them to the earth. And the dragon stood before the woman who was about to give birth, so that when she bore her child he might devour it. She gave birth to a male child, one who is to rule all the nations with a rod of iron, but her child was caught up to God and to his throne, ...