Revelation 6:10

And they cried with a loud voice; their blood cried, or their souls cried to God, saying, How long, O Lord, holy; and therefore thou canst not abide iniquity, and of all iniquity canst least abide innocent blood, which is the blood of thy saints, whose blood is precious in thy sight. And true; and who art true to thy word of threatenings against blood thirsty men, and to thy promises for the deliverance of thy people. Dost thou net judge and avenge our blood on them that dwell on the earth? Dost thou not judge our cause, and avenge us, who have committed vengeance to thee, not daring to avenge ourselves upon wicked men, who dwelling upon the earth are seen, and their practices known to and by thee, and are under thy power, so as thou canst at pleasure do it.