R.A. Torrey emphasizes the importance of persistent prayer as taught by Jesus in Luke 18:1-8, illustrating the need for believers to continually seek God, especially in times of injustice and oppression. The parable of the unjust judge and the persistent widow serves to highlight God's readiness to hear and avenge His elect, contrasting His character with that of the judge. Torrey encourages the faithful to remain steadfast in prayer, even when answers seem delayed, and to trust in God's ultimate justice. He challenges the congregation to reflect on their faith and commitment to prayer, questioning whether Christ would find such faith upon His return.

Watchman Nee emphasizes the necessity of persistent prayer against Satan, drawing from the parable in Luke 18 where the widow's relentless pleas led to her vindication. He argues that while some prayers may be one-time requests, the prayer that opposes Satan must be unceasing, echoing the call for God's people to cry out day and night. Nee highlights that just as Satan accuses us continuously, we too must bring our accusations against him before God without ceasing. He urges believers to maintain a spirit of opposition to Satan in their daily lives, recognizing the need for vengeance against the adversary who has caused much suffering. Ultimately, he calls for a deeper hatred of the devil and a commitment to relentless prayer until God avenges us.

Thomas Brooks emphasizes the necessity of persistent prayer in the life of a Christian, likening it to hunting dogs that relentlessly pursue their prey. He underscores that we must pray without ceasing, as we are constantly in need, facing temptations, and battling sin. Brooks reminds us that the world and Satan are ever-present threats, and our lives are marked by the reality of death, making prayer essential for spiritual survival. He encourages believers to hold on in prayer until they attain the heavenly prize.