First born of the wicked

Write what you see in a book
Death on the streets of gold
John shares in tribulation
What is to take place hereafter

First born to witness, and
Record mass devastation
Keys of death and Hades,
Unlocking gates of suffering.

In heaven appeared seven lamp-stands,
Striking them down at god's throne
First born of the wicked
Ruler of all that grows impure
Every eyes will see him
Behold he comes with the storm
Fallen angel who is, who was
And who is to come

Christ's mouth holds the sword
Sounding amen as I kill
Crimson pours from their skulls
Seven spirits dead at hell's gates
Off comes Christ's hand
That once held the seven stars

Spilling the glory through murder
Now who's the first ? And the last ?