The sight the apostle beheld at the opening the fifth seal was very affecting. He saw the souls of the martyrs under the altar; at the foot of the altar in heaven, at the feet of Christ. Persecutors can only kill the body; after that there is no more they can do; the soul lives.
God has provided a good place in the better world, for those who are faithful unto death. It is not their own death, but the sacrifice of Christ, that gives them entrance into heaven. The cause in which they suffered, was for the word of God; the best any man can lay down his life for; faith in God's word, and the unshaken confession of that faith.
They commit their cause to Him to whom vengeance belongs. The Lord is the comforter of his afflicted servants, and precious is their blood in his sight. As the measure of the sin of persecutors is filling up, so is the number of the persecuted, martyred servants of Christ.
When this is fulfilled, God will send tribulation to those who trouble them, and unbroken happiness and rest to those that are troubled.