What rod is Revelation 2:27 And he shall rule them with a rod of iron; as the vessels of a potter shall they be broken to shivers: even as I received of my Father.
Yet future?
Lamentations 3:1-24 I am the man that hath seen affliction by the rod of his wrath. [2] He hath led me, and brought me into darkness, but not into light. [3] Surely against me is he turned; he turneth his hand against me all the day. [4] My flesh and my skin hath he made old; he hath broken my bones. [5] He hath builded against me, and compassed me with gall and travail. [6] He hath set me in dark places, as they that be dead of old. [7] He hath hedged me about, that I cannot get out: he hath made my chain heavy. [8] Also when I cry and shout, he shutteth out my prayer. [9] He hath inclosed my ways with hewn stone, he hath made my paths crooked. [10] He was unto me as a bear lying in wait, and as a lion in secret places. [11] He hath turned aside my ways, and pulled me in pieces: he hath made me desolate. [12] He hath bent his bow, and set me as a mark for the arrow. [13] He hath caused the arrows of his quiver to enter into my reins. [14] I was a derision to all my people; and their song all the day. [15] He hath filled me with bitterness, he hath made me drunken with wormwood. [16] He hath also broken my teeth with gravel stones, he hath covered me with ashes. [17] And thou hast removed my soul far off from peace: I forgat prosperity. [18] And I said, My strength and my hope is perished from the Lord : [19] Remembering mine affliction and my misery, the wormwood and the gall. [20] My soul hath them still in remembrance, and is humbled in me. (2 Corinthians 12:21)[21] This I recall to my mind, therefore have I hope. [22] It is of the Lord's mercies that we are not consumed, because his compassions fail not. [23] They are new every morning: great is thy faithfulness. [24] The Lord is my portion, saith my soul; therefore will I hope in him.
The Scepter is the rod of iron.
A ruler's scepter was one usually non functional...it would be made of gold and precious stones and look amazing.
But it was in fact a representation of a weapon of war.
God's Scepter of iron is a metaphor for God being active in destroying sin. (War hammer)
And it happens that we can be guilty of corporate sin as well as individual sin.
"No one snowflake feels responsible for the avalanche"
A Lament is a song written to mourn the death. Lamentations was written by Jeremiah to lament the death of the nation of Israel. The people were to go into exile into Babylon as a result of sinful lifestyles.
Now parts of this can be seen as a reference to the suffering of Jesus...not all but occasionally. It's highly metaphoric language saying everything in a metaphoric fashion...it's mostly lost on us today.
But the passage in question is talking about good guys are going to die right along with the wicked and feel powerless to stop anything. No "magic" words of comfort or encouragement to behave justly can be discovered. (Wormwood)