Dear Michael:

The Church has not made any definitive decision on the question of whether or not the souls in purgatory can pray for us. There are no known prayers in liturgies or in Church literature of petitions for intercessions from the souls in purgatory. But, why ask for the intercession of the souls in purgatory anyway, when you can ask the Saints in heaven?

Those in purgatory are working out their issues that need to be resolved before entering heaven. Those in heaven have all the issues resolved, and are cleansed and perfected, and are in the presence of God. They are in a position that those in purgatory do not have, to intercede for you with a cleansed and perfected heart.

Here is an excerpt from the Catholic Encyclopedia on this subject:

VII. INVOCATION OF SOULS
Do the souls in purgatory pray for us? May we call upon them in our needs? There is no decision of the Church on this subject, nor have the theologians pronounced with definiteness concerning the invocation of the souls in purgatory and their intercession for the living. In the ancient liturgies there are no prayers of the Church directed to those who are still in purgatory. On the tombs of the early Christians nothing is more common than a prayer or a supplication asking the departed to intercede with God for surviving friends, but these inscriptions seem always to suppose that the departed one is already with God. St. Thomas (II-II:83:11) denies that the souls in purgatory pray for the living, and states they are not in a position to pray for us, rather we must make intercession for them. Despite the authority of St. Thomas, many renowned theologians hold that the souls in purgatory really pray for us, and that we may invoke their aid. Bellarmine (De Purgatorio, lib. II, xv,) says the reason alleged by St. Thomas is not at all convincing, and holds that in virtue of their greater love of God and their union with Him their prayers may have great intercessory power, for they are really superior to us in love of God, and in intimacy of union with Him. Francisco Suárez (De poenit., disp. xlvii, s. 2, n. 9) goes farther and asserts "that the souls in purgatory are holy, are dear to God, love us with a true love and are mindful of our wants; that they know in a general way our necessities and our dangers, and how great is our need of divine help and divine grace".

When there is question of invoking the prayers of those in purgatory, Bellarmine (loc. cit.) says it is superfluous, ordinarily speaking, for they are ignorant of our circumstances and condition. This is at variance with the opinion of Francisco Suárez, who admits knowledge at least in a general way, also with the opinions of many modern theologians who point to the practice now common with almost all the faithful of addressing their prayers and petitions for help to those who are still in a place of purgation. Scavini (Theol. Moral., XI, n. l74) sees no reason why the souls detained in purgatory may not pray for us, even as we pray for one another. He asserts that this practice has become common at Rome, and that it has the great name of St. Alphonsus in its favour. St. Alphonsus in his work the "Great Means of Salvation", chap. I, III, 2, after quoting Sylvius, Gotti, Lessius, and Medina as favourable to his opinion, concludes: "so the souls in purgatory, being beloved by God and confirmed in grace, have absolutely no impediment to prevent them from praying for us. Still the Church does not invoke them or implore their intercession, because ordinarily they have no cognizance of our prayers. But we may piously believe that God makes our prayers known to them". He alleges also the authority of St. Catharine of Bologna who "whenever she desired any favour had recourse to the souls in purgatory, and was immediately heard".

God Bless,
Bro. Ignatius Mary