From the world’s view, this thesis is false because the top in the list of people who get persecution or death are always Christians. In the U.S., for example, the believers of Jesus are viewed as bigots, having a mental disorder, and intolerant. The problem is that most of those attacking Christianity are themselves, bigots, having a mental disorder, and intolerant. There is so much hypocrisy in society but born-again Christianity is simply based on the truth, who is Christ.
Of an annoyingly persistent prayer: Who can do it? David’s prayer to God for the recovery of his sick son with Bathsheba is one biblical example of a persistent prayer. The Bible stated that the child “was very sick. David, therefore, inquired of God for the child; and David fasted and went and lay all night on the ground. The elders of his household stood beside him in order to raise him up from the ground, but he was unwilling and would not eat food with them.” (2 Sam. 12:1b-17) Only the real believers can do such agonizingly persistent prayer!