This (Jer. 31:15-17) is similarly shows what must be resorted to due to the lack of actual support, for it not only fails to example prayer to the departed, but it is not showing Rachel literally weeping in Heaven after her death in childbirth, (Gn. 35:18,19) or her literally weeping at all - unless she is literally speaking in her grave where she is being heard - but like as also hearing Ephraim bemoaning himself, "Thou hast chastised me, and I was chastised, as a bullock," (Jer. 31:18) Rachel is representing the Jewish women mourning for their slaughtered infants, and prophetically applied to the slaughter of the innocents under Herod. (Mt. 21:18)
That the dead pray for us we know, for example, in Revelation "I saw under the altar the souls of them that were slain
Like as with texts dealt with before, this is a query, while again failing to provide a desperately needed example of a believer addressing anyone else in Heaven by the Lord. The Holy Spirit is not negligent, and His silence is to be revered as well as His words.
Christ says there is great rejoicing in heaven when one sinner repents.
That heaven is at least aware of conversions on earth is not in dispute, but this simply does not equate to intercession being made by them in response to hearing prayers from earth, which only the Lord is shown being addressed in and able to hear and respond to.
Your other attempts were refuted above by the grace of God.
here are better examples in the books that were removed from the Bible in the 1500s,
As a RC you cannot remove books from Scripture that were not infallibly defined as being Scripture, and doubts and disagreement about some books continued down thru the centuries and right into Trent. Which provided the first indisputable complete RC canon after Luther died. See here , and which has been established in many debates here.
Protestants reject these but on the basis of how they were used by Christ and the NT authors I believe this to be a mistake.
Allusions or even a quote from a source does not translate into sanctioning the whole, as Paul quoted pagans and Jude invoked the book of Enoch. See here on how canonical books are treated. The 22 book Palestinian canon is understood by some to have been what Lord referred to by His reference to the tripartite division in Lk. 24:44, while the generally held EO canon is not exactly the same as the RC one, among others.
Meanwhile, the larger issue is that for RCs Scripture is not the supreme transcendent standard for obedience and testing and establishing truth claims, as is abundantly evidenced to be as the assured Word of God, but Rome is, with assurance of Truth being upon the premise of assured magisterial veracity as the steward of Divine revelation, contrary to how the church began.
+1 Bible Fact
And yet this PAGAN practice is encouraged and justified.