Not really. There is next to none...and that's putting it charitably.
Obviously not true, and this has been displayed in one of my previous posts, which I will not regurgitate here; since from the comment quoted below you have no real desire to discuss.
By someone who doesn't understands it himself?
Praying for the dead has about as much to do with the Roman Catholic doctrine of Purgatory as water does with popsicles. Now, to be fair, if you want to discuss praying for the dead (and you intend to advocate a conversion to Judaism to me), I'll be willing to participate.
How can you really come to that conclusion? For what reason then would prayer edify an individual who has moved on then? If they are in heaven, obviously our prayers are not needed as they are already in the Divine Presence. If they are in hell, then our prayers will not help them. So prayers can only effect those who are in some form of intermediate state between earth and heaven. And if they are in an intermediate state, then why would they be there if it didn't have nothing to do with sin or the temporal punishment due to sin?
You speak of me and others not understanding the doctrine, but this comment shows a much greater ignorance than theirs.
Or if you want to say that there is some evidence that there may be some sort of transitional state in the afterlife...but if you want us to believe that Purgatory itself, as taught by the RCC, has a scriptural foundation, well, that's just a non-starter it's so far-fetched. I'd recommend that you return to using Tradition as your basis, if you want to continue in that, because Scripture is going to leave you wanting.
I don't think so. Scripture does speak in 1 Corinthians definitely implies a purging fire:
10 With what grace God has bestowed on me, I have laid a foundation as a careful architect should; it is left for someone else to build upon it. Only, whoever builds on it must be careful how he builds. 11 The foundation which has been laid is the only one which anybody can lay; I mean Jesus Christ. 12 But on this foundation different men will build in gold, silver, precious stones, wood, grass, or straw, 13 and each mans workmanship will be plainly seen. It is the day of the Lord that will disclose it, since that day is to reveal itself in fire, and fire will test the quality of each mans workmanship. 14 He will receive a reward, if the building he has added on stands firm; 15 if it is burnt up, he will be the loser; and yet he himself will be saved, though only as men are saved by passing through fire. And it speaks of the purging fire occurring in the day of the Lord.
But the key to this doctrine in Scripture like I said is the doctrines that this is built upon, which are temporal punishment due to sin, some sins leading not to death (venial sins), the requirement of purity before one can enter into the Divine Presence, and prayer for the dead. The first three are easily defended from even the limited Bible collection used by Protestants, while the last requires 2 Mac which is only found in the Bibles of the Apostolic churches. I have already provide the Scriptural basis for these in a previous post and will not do so again.
But the point being is that if there are sins that do not lead to death (venial sins) and that God's justice requires restitution for sins committed, including forgiven sins, and yet only those that are pure can enter the Divine Presence, there must be some intermediate state for the dead who do not meet the requirements for hell, but also do not immediately meet the requirements to enter God's Presence. Thus some form of purging is required.