Revelation – still stands head and shoulders above other literature as a critique of Imperial political power (not talking party politics but politics in the sense of dictating the life and culture of the polis). Mark of the beast etc… is a critique of economic unjust transactional trade (and a push away from buying and selling to giving and receiving as the economic culture)… All relevant then and deeply relevant now.
Revelation 4 and 5 are the pivotal chapters. Chapter 4 would have left John’s hearers somewhat in a daze for when Caesar came to town his throne was the centre and the elders (by Domitian, numbering 24) were around the throne. From there the future shape was determined, but John describes another throne, a heavenly one. But this is no simple vision of ‘just sing God is in control and all things will fall into place’, for he describes a major issue. He sees a book totally sealed that no-one can open so there is no alternative future but the one that Caesar (and the many would-be-Caesars that arise) determines. But there is hope – and the hope is rooted in Scripture:
Judah is a lion’s whelp;
from the prey, my son, you have gone up.
He crouches down, he stretches out like a lion,
like a lioness—who dares rouse him up?
The scepter shall not depart from Judah,
nor the ruler’s staff from between his feet,
until tribute comes to him,
and the obedience of the peoples is his (Gen. 49:9-10).
The (Jewish) hope that the Messiah would come from the tribe of Judah and sort everything out, hence one of the elders declares:
Do not weep. See, the Lion of the tribe of Judah, the Root of David, has conquered, so that he can open the scroll and its seven seals.
The book can be opened, human destiny, the purposes of God for humanity will be outworked. John stops weeping and turns to see the Lion who has overcome. He sees a Lamb bearing all the marks of having been slain. He hears of a lion, but he sees a lamb. As happens in Revelation the sight gives deep meaning and insight to the hearing. And Jesus is the revelation of God.
I have had a look and I cannot find another reference to the ‘lion’ after that first one. References to the lamb – yes, but none to Jesus as the lion. And I read of the call to follow the lamb wherever he goes.
The unlocking of human destiny is through the slain Lamb and the followers. The Lamb unlocks the scroll, but those that John represents have to eat the scroll (described as a ‘little scroll’ (Rev. 10) so probably indicating that it is not the whole scroll’s content but that there is still work to be done).
The rulership (kingdom) of God is not top down, but working from within; engaging at a level that embraced that which was top down: sin and death, those twin powers.
Paul’s gospel was one of transformation of what was offered to Jesus (the kingdoms of this world)… Jesus, Paul and John in a book full of violent imagery all agree. There is a path for us to follow.

I’ve been thinking over your comment about all war is civil war. The other aspect of war that gets forgotten is the destruction of the environment and other species. So all war is also an attack on creation.
Jesus is completely radical. His answer to imperial power and those who surrounded and enabled it (thinking of Jewish leaders here), was to preach something radically empowering to ordinary people and then to allow the state to kill him. Under the appearance of compliance and obedience people were directed to negate the power of the state with actions such as giving Roman soldiers their cloaks or turning the other cheek. It removes the power of the oppressor to do so. Not a path most of us want to follow. But a fascinating rebuke to imperial power. Too bad that many in the church who claim to follow Jesus’ model really end up following that of the imperial power.
I am enjoying your adventure.
Religion with rules is a tough ask… but to follow Jesus is another level all together!!