Lord Jesus: After death, the soul is in suspension. She has time to see how she has lived and to pronounce herself upon where she should go. During that time, all prayers are heard and I am waiting for the contrition of that soul. This lasts about three days as you said, so usually until the time of the funeral, when the soul departs from the world. However, after that time, the judgment about the soul might not have yet been made. I, in My Mercy, am still waiting for these prayers that could help the soul. Even though the prayers brought to Me right after the death of the given soul count the most, I still accept prayers for her for a month, and these prayers can in fact influence where the given soul will find herself. (…) You have time for a month, but know that My time is not like your time, and at the time of judgment I already know how much prayer will come for the given soul. I do not have to wait for a month to pass judgment on the soul. This time is given for you. My child, remember however that prayers brought to Me right after the death of the soul are for Me the most important and their power is the greatest, because then I burn with My righteous anger against the soul and prayer for her can mitigate that anger. Then you can truly implore Me, because then My suffering is the greatest, when I see the entire ingratitude of the soul and the enormity of the graces wasted by her and I need propitiation for her sins. Therefore by praying at that time, you soothe My pain, wash My wounds and My righteous anger for that soul lessens. (…) Only after a month the situation of the soul becomes irrevocable and you can not plead for her if she has been damned. And if she went to Purgatory, prayer for her will be slowly extracting her from these torments. If the soul prayed a lot for the dead then [fast], because then she has many intercessors in Heaven and they will help her a lot.
Translated from : Kompendium z Orędzi na Czasy Ostateczne, które własnie nadeszły (z tomow 1-8), Warszawa 2010, p. 181-182