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)
That is, in the pictorial representation (see on v. 9). The “souls” are heard speaking.
Lord.
Gr. despotēs (see on Luke 2:29). The correlative of despotēs is doulos, “slave” (see 1 Peter 2:18). By giving their lives the martyrs have shown themselves true “slaves of God” (see Titus 1:1; cf. on Rev. 6:11), and thus He is their Master. The reference here is probably to the Father.
Holy and true.
See on ch. 3:7, where these words are applied to Christ.
Avenge.
The martyrs do not seek vengeance for themselves; they seek, instead, the vindication of God’s name (see Rom. 12:19; see on Rev. 5:13).