Mary, the mother of Jesus Christ, is depicted in Revelation 12 as the woman adorned with a crown of twelve stars, clothed with the sun, and with her feet upon the moon.
And the temple of God was opened in heaven. And the Ark of his Testament was seen in his temple. And there were lightnings and voices and thunders, and an earthquake, and great hail. And a great sign appeared in heaven: a woman clothed with the sun, and the moon was under her feet, and on her head was a crown of twelve stars. And being with child, she cried out while giving birth, and she was suffering in order to give birth.
(Revelation 11:19-12:2)
The prayers of the saints are offered to God by an angel, as depicted in the biblical passages Revelation 5:8 and Revelation 8:3-4.
And I saw, and behold, in the midst of the throne and the four living creatures, and in the midst of the elders, a Lamb was standing, as if it were slain, having seven horns and seven eyes, which are the seven spirits of God, sent forth to all the earth. And he approached and received the book from the right hand of the One sitting upon the throne. And when he had opened the book, the four living creatures and the twenty-four elders fell down before the Lamb, each having stringed instruments, as well as golden bowls full of fragrances, which are the prayers of the saints. And they were singing a new canticle, saying: "O Lord, you are worthy to receive the book and to open its seals, because you were slain and have redeemed us for God, by your blood, from every tribe and language and people and nation. And you have made us into a kingdom and into priests for our God, and we shall reign over the earth." And I saw, and I heard the voice of many Angels surrounding the throne and the living creatures and the elders, (and their number was thousands of thousands) saying with a great voice: "The Lamb who was slain is worthy to receive power, and divinity, and wisdom, and strength, and honor, and glory, and blessing." And every creature that is in heaven, and on earth, and under the earth, and all that is within the sea: I heard them all saying: "To the One sitting upon the throne and to the Lamb be blessing, and honor, and glory, and authority, forever and ever." And the four living creatures were saying, "Amen." And the twenty-four elders fell down on their faces, and they adored the One who lives forever and ever.
(Revelation 5:6-14)
And another Angel approached, and he stood before the altar, holding a golden censer. And much incense was given to him, so that he might offer upon the golden altar, which is before the throne of God, the prayers of all the saints. And the smoke of the incense of the prayers of the saints ascended, in the presence of God, from the hand of the Angel.
(Revelation 8:3-4)
Should there be any objection to the notion that the souls of the martyrs, who are indeed saints, do not pray, one should refer to Revelation 6.
And when he had opened the fifth seal, I saw, under the altar, the souls of those who had been slain because of the Word of God and because of the testimony that they held. And they were crying out with a loud voice, saying: "How long, O Holy and True Lord, will you not judge and not vindicate our blood against those who dwell upon the earth?" And white robes were given to each of them. And they were told that they should rest for a brief time, until their fellow servants and their brothers, who were to be slain even as they were slain, would be completed.
(Revelation 6:9-11)
All these verses have been cited before, all have been quoted before. Yet, we still witness people accusing devout Catholics, Orthodox, Anglicans, and Lutheran Christians of idolatry because they pray to or through the saints to the Lord our God. How sad it is to witness. May God have mercy on the accusers.