God does not answer prayers based on who is praying. God answers prayers based on whether they are asked according to His will (1 John 5:14-15). There is absolutely no basis or need to pray to anyone other than God alone. There is no basis for asking those who are in heaven to pray for us. Only God can hear our prayers. Only God can answer our prayers. No one in heaven has any greater access to God’s throne than we do through prayer (Hebrews 4:16).
The Bible nowhere mentions anyone asking for someone in heaven to pray for him. The Bible nowhere describes anyone in heaven praying for anyone on earth.
Hebrews 12:1 Therefore, since we are surrounded by such a great cloud of witnesses, let us throw off everything that hinders and the sin that so easily entangles. And let us run with perseverance the race marked out for us,
Witnesses must be able to witness something, they must be able to hear and see. Your statement about only God hearing our prayers is patently false.
Rev 5:8 And when he had taken it, the four living creatures and the twenty-four elders fell down before the Lamb. Each one had a harp and they were holding golden bowls full of incense, which are the prayers of God’s people.
The elders (i.e. the 12 Apostles and 12 Patriarchs) are presenting our prayers to God.
*Luke 16:19 “There was a rich man who was dressed in purple and fine linen and lived in luxury every day. 20 At his gate was laid a beggar named Lazarus, covered with sores 21 and longing to eat what fell from the rich man’s table. Even the dogs came and licked his sores. 22 “The time came when the beggar died and the angels carried him to Abraham’s side. The rich man also died and was buried. 23 In Hades, where he was in torment, he looked up and saw Abraham far away, with Lazarus by his side. 24 So he called to him, **‘Father Abraham, have pity on me **and send Lazarus to dip the tip of his finger in water and cool my tongue, because I am in agony in this fire.’ 25 “
But Abraham replied, ‘Son, remember that in your lifetime you received your good things, while Lazarus received bad things, but now he is comforted here and you are in agony. 26 And besides all this, between us and you a great chasm has been set in place, so that those who want to go from here to you cannot, nor can anyone cross over from there to us.’ 27 “He answered, ‘
Then I beg you, father, send Lazarus to my family, 28 for I have five brothers. Let him warn them, so that they will not also come to this place of torment.’ 29
“Abraham replied, ‘They have Moses and the Prophets; let them listen to them.’ 30 “‘No, father Abraham,’ he said, ‘but if someone from the dead goes to them, they will repent.’ 31 “He said to him, ‘If they do not listen to Moses and the Prophets, they will not be convinced even if someone rises from the dead.’” *
Jesus Himself teaches about the Bosom of Abraham, and how Abraham not only hears the petition from the rich man in hades, AND answers him.
*2 Tim 1:16 May the Lord show mercy to the
household of Onesiphorus, because he often refreshed me and was not ashamed of my chains. 17 On the contrary, when he was in Rome, he searched hard for me until he found me. 18
May the Lord grant that he will find mercy from the Lord on that day! You know very well in how many ways he helped me in Ephesus.
2 Tim 4:19 Greet Priscilla and Aquila and the
household of Onesiphorus. 20 Erastus stayed in Corinth, and I left Trophimus sick in Miletus. *
Here St. Paul prays for the soul of someone who had died.
Maybe you should consider that your perception of the connections between the Body of Christ here on earth and the Body of Christ that is in Heaven and Purgatory?