Re: souls under the alter Rev.6:9
Very difficult to see bodiless souls, mortal or otherwise. This is obviously a vision describing the suffering church. The martyr's cry is akin to the blood of Able crying out for justice.(Gen.4:10)
Ellicott's commentary on this verse reads as follows
The word “souls” has been made a resting-place for an argument respecting the intermediate state. There is no ground for this: it is quite beside the object of the seal, which simply exhibits the sufferings of Christ’s people as the necessary accompaniment of the progress of the gospel. These sufferings are because of the Word of God and the testimony which they held. It was because of the Word of God and the testimony that the sacred seer himself suffered (Revelation 1:9). The words here remind us that the same issue which St. John fought, the suffering ones of after ages would be fighting. Their witness and his was the God-man; to this testimony they clung. They were not ashamed of Christ, or of His words, and they suffered for their courage and fidelity.