Bible Verses about Intercession of the Saints

“Therefore I exhort first of all that supplications, prayers, intercessions, and giving of thanks be made for all men.”
(1 Timothy 2:1, NKJV)
“Now when He had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb, each having a harp, and golden bowls full of incense, which are the prayers of the saints.”
(Revelation 5:8, NKJV)
“Then another angel, having a golden censer, came and stood at the altar. He was given much incense, that he should offer it with the prayers of all the saints upon the golden altar which was before the throne. And the smoke of the incense, with the prayers of the saints, ascended before God from the angel’s hand. And the angel took the censer, and filled it with fire of the altar, and cast it into the earth: and there were voices, and thunderings, and lightnings, and an earthquake.”
(Revelation 8:3-5, NKJV)