"Rom. 8:35-39 – therefore, death does not separate the family of God and the love of Christ. We are still united with each other, even beyond death."
"Luke 15:7, 10 – if the angels and saints experience joy in heaven over our repentance, then they are still connected to us and are aware of our behavior."
Angels rejoicing over a conversion cannot simply translate into support for them receiving our prayer requests because they most probably know when a soul is added to the Book of Life.
Satan is without a doubt conscious of events taking place in this world, yet no Roman Catholic would ever suggest prayer to him.
"Heb. 12:1 – the “cloud of witnesses” (nephos marturon) that we are surrounded by is a great amphitheatre of witnesses to the earthly race, and they actively participate and cheer us (the runners) on, in our race to salvation."
The context of this passage relates to viewing the Old Testament saints as good moral examples. We are all united into a spiritual family by faith in Christ. There is nothing in that which would even remotely suggest prayer to these witnesses.
"Rev. 5:8 – the prayers of the saints (on heaven and earth) are presented to God by the angels and saints in heaven. This shows that the saints intercede on our behalf before God, and it also demonstrates that our prayers on earth are united with their prayers in heaven. (The “24 elders” are said to refer to the people of God – perhaps the 12 tribes and 12 apostles – and the “four living creatures” are said to refer to the angels.)"
This simply means that God allowed saints in heaven to "hold" bowls of prayers. The text says nothing about prayers being directed to saints or angels in heaven, nor gives us permission to do so. The text does not indicate how these saints would be aware of our prayers.
"Rev. 8:3-4 – in heaven an angel mingles incense with the prayers of all the saints on the golden altar before the throne of God, and the smoke of the incense rose with the prayers of the saints from the hand of the angel before God. These prayers “rise up” before God and elicit various kinds of earthly activity. God responds to his children’s requests, whether made by his children on earth or in heaven."
Bowls of wrath are mentioned in Revelation 16. Should we conclude that they were directed to the saints in heaven because they also carried them? The text does not exhort believers on earth to pray to or through angels. It states that the angel was to add incense to the prayers in the golden censer containing the prayers of the saints.
"Psalm 103:20-21; 148:1-2 – we praise the angels and ask for their assistance in doing God’s will...Psalm 141:2 – David asks that his prayer be counted as incense before God. The prayers of the saints have powerful effects."
The Psalmists are simply telling all creations in all places to praise God's name. Creation is a reflection of His glory. These passages do not in any way exhort us to honor or pray to beings other than the Lord. In Psalm 103:22, inanimate objects are told to praise God. In Psalm 148:3, the sun, moon, and the stars are also told to praise God. Should we pray to these things, as well?