They weren’t in Heaven until after the Crucifixion and Resurrection of Christ,
Matt 22:32* I am the God of Abraham, and the God of Isaac, and the God of Jacob? He is not the God of the dead, but of the living.*
Scripture forbids a particular method of attempting to contact the dead, that of divination. Deut 18:10-11
So, you’re saying that necromancy is not abomination as long as you talk to the dead yourself and don’t use a medium or diviner? Isn’t it more reasonable to say God wants us to talk to Him, not the dead?
A Scripture passage which shows that communication with specific people who have died is not sinful, is the example of Our Lord Himself. Matt. 17:1-4: And after six days Jesus took with him Peter and James and John his brother, and led them up a high mountain apart. And he was transfigured before them, and his face shone like the sun, and his garments became white as light. And behold, there appeared to them Moses and Eli’jah, talking with him. And Peter said to Jesus, "Lord, it is well that we are here; if you wish, I will make three booths here, one for you and one for Moses and one for Eli’jah.
Apples and oranges. What happened in the Transfiguration cannot be compared with anything we do in praying, or not praying, to deceased saints. Jesus is God. Furthermore, Moses and Elijah were talking to Him, not vice versa. And if He did say anything to them it was not to get them to pray for Him, etc., as you see the purpose of praying to saints. He was showing the disciples who witnessed it a brief look at and preview of “the Son of man coming in His Kingdom” (Matt. 16:28).
Catholics do not pray to saints to ask them to predict the future or use any preternatural means. We pray for their help in praying to God for us. Those in Heaven are righteous and we are told in James 5:16 that the prayers of a righteous man availeth much.
**And you don’t see that it is a bit of a stretch to assume that St. Barnabas, for example, can hear a billion people all over the world praying to him all at once and know what each is praying, including the specific details of each prayer, to then pray for each of those people praying to him, to God. Two things come to mind. First, he would have to be omniscient, and secondly, he becomes a mediator between God and man, contrary to 1 Tim. 2:5.
Finally, the context of James 5:16 is as follows:**
**James 5:
14. Is anyone among you sick? Let him call for the elders of the church, and let them pray over him, anointing him with oil in the name of the Lord.
15. And the prayer of faith will save the sick, and the Lord will raise him up. And if he has committed sins, he will be forgiven.
16. Confess your trespasses to one another, and pray for one another, that you may be healed.
The effective, fervent prayer of a righteous man avails much.
17. Elijah was a man with a nature like ours, and he prayed earnestly that it would not rain; and it did not rain on the land for three years and six months.
18. And he prayed again, and the heaven gave rain, and the earth produced its fruit. **
**Clearly, you have Body ministry here, but it is all confined to members of the Body who are here “among you,” not departed and in heaven. Pray for one another, that you may be healed. Then it says, the effective, fervent prayer of a righteous man avails much. Much what? Much results in someone’s being healed. Clearly this is not a verse that’s intended to have us pray to someone in heaven simply because someone there is righteous. The context dictates otherwise.
And it’s not a matter of “dividing” the Body. It is simply a matter of recognizing that what the Holy Spirit inspired the various writers to say is for the benefit of those in the Body who are still here looking through a glass darkly and functioning here on earth using their various gifts and callings as the Spirit intended them to be used, to edify or build up each member still running the race and still dealing with the world, the flesh, and the devil.
Peace**