Revelation 6:9

After the opening of the fifth seal, the souls of the martyrs under the altar cried aloud for justice, saying, how long, &c. Out of zeal for God's honour, and the good of the Church, they pray that the enemies of Christ, and of the Christian faith, may be humbled, and that all may acknowledge and fear the justice of God, by the punishment of his enemies, and the reward of his faithful servants. St. Jerome, by under the altar, understands Christ himself, under whom, as under their head, are all the martyrs. Some who doubted or held that the blessed were not admitted to see God, in heaven before the day of general judgment, have turned this expression, under the altar, or at least the expressions of some of the fathers upon these words, as if they were favourable to their error, which is sufficiently disproved, even by the words that follow, that white robes were given to each of them one, in which they are said to walk with him wherever he goeth. (Chap. iii. 4. and Chap. xiv. 4.) (Witham) --- Under the altar. Christ, as man, is this altar, under which the souls of the martyrs live in heaven: as their bodies are here deposited under our altars. --- Revenge our blood. They ask not this out of hatred to their enemies, but out of zeal for the glory of God, and a desire that the Lord would accelerate the general judgment, and the complete beatitude of all his elect. (Challoner) --- These holy souls, who had been slain for the word of God, do not beg the Almighty to revenge their blood, through any hatred of their enemies, but through the great zeal with which they were animated, to see the justice of God manifested: that by this severity they might be moved to fear him, and be converted to him. Thus in the Scripture we often read of the prophets beseeching the Almighty to fill their enemies with confusion, to humble them, &c. (Perer; Bossuet; Du Pin, &c.) --- And white robes. To console them, they each had given them a white robe, as a mark of their innocence, and as an assurance that on account of it they would in due time receive full measure of beatitude. They should rest yet a little while, most probably to the day of final retribution, when the number of those destined to be their brethren in bliss should be completed. Then they should all together receive full recompense, and their persecutors be covered with confusion. (St. Augustine, serm. xi. de sanctis; Gregory the great, lib. ii. Moral. cap. iv.