When you take the whole Bible you'll see that while God CAN protect you, he chooses not to do so because it fits his purposes. Which is one reason why Christians suffer persecution. As Paul said,

(2 Corinthians 11:24-28 NIV) Five times I received from the Jews the forty lashes minus one. {25} Three times I was beaten with rods, once I was stoned, three times I was shipwrecked, I spent a night and a day in the open sea, {26} I have been constantly on the move. I have been in danger from rivers, in danger from bandits, in danger from my own countrymen, in danger from Gentiles; in danger in the city, in danger in the country, in danger at sea; and in danger from false brothers. {27} I have labored and toiled and have often gone without sleep; I have known hunger and thirst and have often gone without food; I have been cold and naked. {28} Besides everything else, I face daily the pressure of my concern for all the churches.