John Wesley on Revelation 3:10

Because thou hast kept the word of my patience - The word of Christ is indeed a word of patience. I also will keep thee - O happy exemption from that spreading calamity! From the hour of temptation - So that thou shalt not enter into temptation; but it shall pass over thee. The hour denotes the short time of its continuance; that is, at any one place. At every one it was very sharp, though short; wherein the great tempter was not idle, Rev 2:10. Which hour shall come upon the whole earth - The whole Roman empire. It went over the Christians, and over the Jews and heathens; though in a very different manner. This was the time of the persecution under the seemingly virtuous emperor Trajan. The two preceding persecutions were under those monsters, Nero and Domitian; but Trajan was so admired for his goodness, and his persecution was of such a nature, that it was a temptation indeed, and did throughly try them that dwelt upon the earth.