While that has supremacy for you, i would think you also would look to the rest of the Hebrews Scriptures, and together they clearly portray the devil as a malevolent being, opposed to God and His own, being as Jesus said, a liar and a murderer, who comes to steal, kill and destroy, even though God makes what he does to works for the good of those who love God.
In self will he first asserted, in the first "occupy movement," that "I will be like the Most High," (Is. 14:14) that God should “share the wealth,” that of His position and glory, but which to a lesser degree true believers will be rewarded with. (Rv. 3:21)
Next, consistent with above attempt, he sought to instil in Eve his the victim-entitlement mindset, that Eve was not being dealt with fairly by the solitary restriction placed on Adam and her by their Father, to whom the devil attributed selfish motive God. (Gn. 3)
Under this ethos those who have a moral right to wealth, in what ever form it is, are to divest themselves of it to share it with those who demand it regardless of lack of merit, and as a pretext to dishonor and eliminate those who t oppose them, even if they actually are fit for position and power, and to exalt their own unworthy and lustful selves.
And we can see how successful the devil has been in instilling this via the modern deleterious liberal ideology of today, with 60's radicals taking over administration buildings, to actually becoming the administration.
The devil also evidenced jealously over Job blessing God and being blessed, and sought to bring Job to act contrary to the former by doing contrary to the latter. (Job. 1+2)
And likewise the devil was provoking Hanna to doubt God's love for her because her womb was barren. (1Sam. 1:5)
The devil also seduced Israel to worship demons as did the pagans, to their own hurt, rather than the living and true God who had shown Himself strong on their behalf. (Ps. 106)
And demons seem to be involved in the council described in 1Kg. 22:19-23, of a laying spirit sent to deceive Ahab.
Thus whatever similarities you see with paganism as regards the devil, he is revealed as a real being and demons as real entities.
As for Jesus, even without divinity, he was moshiach (the messiah) in that the United States could never have been founded without his influence.
A political Messiah is much what the disciples supposed Him to be at first, but came to realize He was the lamb without spot who " was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him; and with his stripes we are healed. All we like sheep have gone astray; we have turned every one to his own way; and the Lord hath laid on him the iniquity of us all. " (Isaiah 53:5-6)
If He was not, then there would have been no resurrection power, and no real Christian faith as the foundation for America.
And one of His disciples, when all was said and done, ended up exclaiming to Him, “My Lord and my God!”