COURTESY OF THE PERSON WHO WROTE THE OP.
Catholic Christians believe that all redeemed souls are "alive in Christ" and that we are all one in Christ. Because of the Lord's saving, redemptive grace, mortal "death" cannot separate us from the love of God, nor can it separate the members from the Body of Christ.
As a Scripture notes, from the words of Jesus to the Sadducees, "God is God of the Living, not of the Dead."
Elijah was taken to heaven, but Moses did indeed die. Yet, no matter what happened to his body, he was obviously made a very real, "living" heavenly presence who knew what was going on with Christ's earthly ministry and who did indeed appear on earth (with Elijah) to speak with Jesus about upcoming events.
First--we must ask ourselves HOW it is even proper for either Elijah or Moses (OT figures) to have even attained heaven BEFORE the salvific death/resurrection of Jesus.Before the coming of Christ, salvation (the attainment of heaven in the presence of God) was *not* attainable. yet God, who dwells outside the confines of time, as we know it, obviously made exceptions for Elijah and Moses (and Enoch) in light of the future saving grace of Jesus. How else would these sinful yet holy men have attained heaven before the Atonement wrought by Jesus?
Too, were Moses and Elijah able to appear with Christ at the Transfiguration due to their own power? Were they able to "know" matters concerning Christ's earthly ministry and passage into Jerusalem because of their own power? No. These abilities were all due to the power and dispensation of God.
Moreover, all true believers are "saints"--not just those who are "alive in Christ" in Heaven. Our brothers and sisters in Heaven surround us as a real "cloud of witnesses," watching us as we continue our race toward the ultimate destiny (Hebrews 11-- 12.1-2). Also, as noted in the Book of Revelation, the heavenly "elders," who are believed to represent the "tribes" of the faithful, offer our prayers personally up to God as "incense." (Revelation 5.8). The martyrs (very much alive in heaven) cry out for God's intervention upon the earth and its people before the Final Judgment (Revelation 6.9-11). In this latter passage, we see that God addresses the heavenly believers to be patient and wait "until their fellow brothers and sisters" on earth meet their destinies at the appointed time.
Much misunderstanding comes from the use of term "praying." ALL prayer is directed only to God. Fellow Christians (whether alive on earth or alive in heaven) can only intercede for us...pray with us. As Scripture notes, the intercession of a holy believer is very powerful (James 5.16-18). Here, "James" makes explicit mention of the power of Elijah's prayers--again assuring us that all believers are "alive" in Christ.
Even so, intercession of one believer on behalf of another is valid only in the ONE Mediator-ship of Jesus Christ. It is in Him alone that we can pray for each other.
The OT example comparing Catholics to the King conjuring a dead spirit through witchraft to foretell the future is a really lame comparison.
As for your comment about Mariolatry, I agree. But these can't be judged as representing all Catholics, just as the Protestants who commit "Bibliolatry" (and it happens) should not be considered representative of all Protestants.
Mary is a fellow Christian. Pure and simple. She is loved, respected, and honored as a human mother-figure to Christians (those with any sense). Yes, she was uniquely blessed and prepared with enormous grace for her ministry as Mother of Jesus, welcoming God's invitation to receive the Lord, so that all of us might be able to one day receive the Lord. The Holy Spirit inspired Elizabeth to cry out to Mary in a "loud voice" and call her "blessed" (Luke 1.42-43) and Mary herself prophecied that "all generations" of her children in faith would follow that example (Luke 1.48). Mary was more blessed because of her faith and keeping of God's word when she welcomed God's saving Son, than simply by having a physical baby (Luke 11.27-28).
I'm not a Roman Catholic. I am Eastern orthodox Catholic--which is a tradition of faith older than the Church of Rome. We are from the churches of Jerusalem, Antioch, etc.--the first churches. I don't believe in the infallible authority of the Roman Pope, nor that the Roman Catholic Church is the "one, true, church."
We don't "pray to the dead," because no one is dead in Christ Jesus and we believe our heavenly brothers and sisters are indeed a great "cloud of witnesses" united to us in the Resurrection of the Lord. Plus, it is wrong to worship anyone other than God--Father, Son & HS. Fellow Christains can be admired, loved, and appreciated, but that's it. Those that take it too far are making their experience of Christ counter-productive.