According to Gloria Copeland: “Psalm 91 has kept many a person safe during all kinds of danger and war. For instance, Ken knew a commander in the Vietnam War who made all his troops quote Psalm 91 every day—whether they liked it or not. It paid off! His company didn't have one casualty.
“I also heard a similar testimony about a group of soldiers in World War II from a very small town named Seadrift, Texas. Every day the women of Seadrift prayed Psalm 91 over those men and as a result, all returned home safely. What a miracle! “ (Copeland, “Believers Voice of Victory,” October 2003).
The Lord has certainly furnished us with many examples of His merciful and divine protection, particularly in wartime. The Copelands, however, have continued to teach that the prayer of faith (as they define it) is a force which can be utilized by individuals to bring riches, unceasing health, and controlled miracles. In Copeland’s first example, it is reasonable to conclude that not all the troops coerced to pray Psalm 91 were believers. Consequently, to unbelievers, their “prayers” are nothing more than repetition and we would do well to heed the admonition of Matthew:6:7. "But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking" -Matthew:6:7.
As with most stories, Copeland provides no documentation. How different is the testimony of scripture. When the Lord miraculously healed the lame man “whom they laid daily at the gate of the temple” (Acts:3:2-11), the religious leaders who resisted the preaching of Peter and John had no lack of evidence. “And beholding the man which was healed standing with them, they could say nothing against it” (Acts:4:14).