6:10 And they cried - This cry did not begin now, but under the first Roman persecution. The Romans themselves had already avenged the martyrs slain by the Jews on that whole nation. How long - They knew their blood would be avenged; but not immediately, as is now shown them. O Lord - The Greek word properly signifies the master of a family: it is therefore beautifully used by these, who are peculiarly of the household of God. Thou Holy One and true - Both the holiness and truth of God require him to execute judgment and vengeance. Dost thou not judge and avenge our blood? - There is no impure affection in heaven: therefore, this desire of theirs is pure and suitable to the will of God. The martyrs are concerned for the praise of their Master, of his holiness and truth: and the praise is given him, Rev 19:2, where the prayer of the martyrs is changed into a thanksgiving: Thou holy One and true: True and right are thy judgments. How long dost thou not judge and avenge our blood? He hath judged the great whore, and hath avenged the blood of his servants.

Revelation 6:10 Parallel Commentaries

From the Supplement to the Summa --Question Lxxii of the Prayers of the Saints who are in Heaven
I. Are the Saints cognizant of our Prayers? II. Ought we to appeal to the Saints to intercede for us? III. Are the Saints' Prayers to God for us always heard? I Are the Saints cognizant of our Prayers? On those words of Job,[267] Whether his children come to honour or dishonour, he shall not understand, S. Gregory says: "This is not to be understood of the souls of the Saints, for they see from within the glory of Almighty God, it is in nowise credible that there should be anything without of …
St. Thomas Aquinas—On Prayer and The Contemplative Life

Christ's Kingly Office
Q-26: HOW DOES CHRIST EXECUTE THE OFFICE OF A KING? A: In subduing us to himself, in ruling and defending us, and in restraining and conquering all his and our enemies. Let us consider now Christ's regal office. And he has on his vesture, and on his thigh, a name written, "King of kings, and Lord of lords", Rev 19:16. Jesus Christ is of mighty renown, he is a king; (1.) he has a kingly title. High and Lofty.' Isa 57:15. (2.) He has his insignia regalia, his ensigns of royalty; corona est insigne …
Thomas Watson—A Body of Divinity

The Prophet Amos.
GENERAL PRELIMINARY REMARKS. It will not be necessary to extend our preliminary remarks on the prophet Amos, since on the main point--viz., the circumstances under which he appeared as a prophet--the introduction to the prophecies of Hosea may be regarded as having been written for those of Amos also. For, according to the inscription, they belong to the same period at which Hosea's prophetic ministry began, viz., the latter part of the reign of Jeroboam II., and after Uzziah had ascended the …
Ernst Wilhelm Hengstenberg—Christology of the Old Testament