He shall redeem their soul from deceit and violence: and precious shall their blood be in his sight. Psalm 72:14
Precious in the sight of the LORD is the death of his saints. Psalm 116:15
And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth? Revelation 6:10
For they have shed the blood of saints and prophets, and thou hast given them blood to drink; for they are worthy. And I heard another out of the altar say, Even so, Lord God Almighty, true and righteous are thy judgments. Revelation 16:6,7
And I saw the woman drunken with the blood of the saints, and with the blood of the martyrs of Jesus: and when I saw her, I wondered with great admiration. Revelation 17:6
And in her was found the blood of prophets, and of saints, and of all that were slain upon the earth. Revelation 18:24
And after these things I heard a great voice of much people in heaven, saying, Alleluia; Salvation, and glory, and honour, and power, unto the Lord our God: For true and righteous are his judgments: for he hath judged the great whore, which did corrupt the earth with her fornication, and hath avenged the blood of his servants at her hand. And again they said, Alleluia And her smoke rose up for ever and ever. And the four and twenty elders and the four beasts fell down and worshipped God that sat on the throne, saying, Amen; Alleluia. And a voice came out of the throne, saying, Praise our God, all ye his servants, and ye that fear him, both small and great. Revelation 19:1-5