I truly hope that once I am in Heaven I do not want revenge on others and have forgotten all the evil done to me.
I never said revenge, but avenging and, those in Heaven are conscious of what is happening on Earth.
Revelation 6:9-11
~ 9 When he opened the fifth seal, I saw under the altar the souls of those who had been slain for the word of God and for the witness they had borne; 10 they cried out with a loud voice, “O Sovereign Lord, holy and true,
how long before thou wilt judge and avenge our blood on those who dwell upon the earth?” 11 Then they were each given a white robe and told to rest a little longer, until the number of their fellow servants and their brethren should be complete, who were to be killed as they themselves had been.
These martyrs are aware that their enemies are still living on Earth since they are asking "how long before thou wilt judge and
avenge our blood on those who dwell upon the earth?"
Revelation 7:13-14
~ 13 Then one of the elders addressed me, saying, “Who are these, clothed in white robes, and whence have they come?” 14 I said to him, “Sir, you know.” And he said to me, “These are they who have come out of the great tribulation; they have washed their robes and made them white in the blood of the Lamb.
The elder knows that these martyrs have "come out of the great tribulation."
Revelation 19:1-4
~ 1 After this I heard what seemed to be the mighty voice of a great multitude in heaven, crying,
“Hallelujah! Salvation and glory and power belong to our God,
2 for his judgments are true and just;
he has judged the great harlot who corrupted the earth with her fornication,
and he has
avenged on her the blood of his servants.”
3 Once more they cried,
“Hallelujah! The smoke from her goes up for ever and ever.”
4 And the twenty-four elders and the four living creatures fell down and worshiped God who is seated on the throne, saying, “Amen. Hallelujah!”
They are conscious of what happened to them on Earth.
As far as intercessory prayer:
Revelation 5:6-10
~ 6 And between the throne and the four living creatures and among the elders, I saw a Lamb standing, as though it had been slain, with seven horns and with seven eyes, which are the seven spirits of God sent out into all the earth; 7 and he went and took the scroll from the right hand of him who was seated on the throne. 8 And when he had taken the scroll,
the four living creatures and the twenty-four elders fell down before the Lamb, each holding a harp, and with golden bowls full of incense, which are the prayers of the saints; 9 and they sang a new song, saying,
“Worthy art thou to take the scroll and to open its seals,
for thou wast slain and by thy blood didst ransom men for God
from every tribe and tongue and people and nation,
10 and hast made them a kingdom and priests to our God,
and they shall reign on earth.”
In the Orthodox Church, this is what intercessory prayer is. Our prayers, being lifted up into the Heavens and those in Heaven bring our prayers to God. No different than if I ask you or anyone else to pray for me. I obviously am not going to change your mind on this and it is not my intention to do so, just show what we Orthodox believe and why we believe it.