Revelation 8:3
And another angel came and stood at the altar with a golden censer; and he was given much incense to offer with the prayers of all the saints on the golden altar before the throne — the angel (likely a high priest figure) at the golden altar mingles incense with saints' prayers (proseuchē), uniting heavenly worship with earthly intercession. The incense (thymiama) carries the prayers upward (Psalm 141:2); this establishes that the subsequent judgments are responses to the persistent cries of the persecuted.