This is a true story that happened recently. It's from one of the sisters whose father died near the end of June:
"Tuesday evening my dad noticed someone in the room with us. He looked toward the ceiling and asked me “Who is that?” I asked him who it looked like since I couldn’t see anyone. 'John the XXIII,' was his reply. I started telling him about John XXIII. The next morning my brother looked him up on the Internet and printed out his picture.
[Shortly after this] a priest came to administer the Sacrament of the Sick. We told him about dad’s 'vision' of John XXIII. Fr Perez had recently returned from Rome. He told us that he had celebrated Mass for dad on the tomb of John the XXIII."
Isn't that amazing? They didn't even know that this priest had celebrated Mass on the tomb of John XXIII until afterward. But it's not unusual for people who are dying to see a saint or the Blessed Mother, who comes to help them enter eternity. The saints can help us in practical ways like this; it's a good idea to ask for their help!