Because you have kept My command to persevere

Revelation 3:10
Because you have kept My command to persevere, I also will keep you from the hour of trial which shall come upon the whole world, to test those who dwell on the earth. 

In following the Lord, the believers are faced with various kinds of persecution and are taught to persevere. There is none other persecution that will be more severe than those at the Last Days. So the Lord encourages even those during the Last Days to persevere, and that He will protect us. Until that time, His command to persevere should also be applied.